Turn a paragraph into a table

A caselet states numerical data in sentences rather than a chart. Extract entities, categories and time periods into a compact table before solving questions. Underline words such as “remaining”, “of these” and “compared with last year” because they define the base. If a passage says 300 students registered, 60% appeared and 40% of those who appeared passed, the pass count is 300×0.60×0.40=72. Multiplying 300 by 40% alone incorrectly treats registered students as the base of the pass percentage.

Distinguish totals and subgroups

When a passage lists overlapping groups, do not add them as if disjoint. If it states boys and girls, those may form a complete partition; if it states students who play cricket and students who play football, some may play both. Translate “only”, “both”, “at least one” and “neither” into a small Venn or two-way table. A missing subgroup can often be found by subtracting known disjoint parts from a total.

Solve from the data, not the story

The narrative may mention a school, factory or shop, but the calculation depends on the stated values. Keep names as labels and do not import assumptions about real institutions. For each practice question, identify the exact sentence containing the value, state the operation and check the unit. Short source solutions in this draft inventory must be expanded before the final book so candidates can see which sentence and base were used.

Three populations in a selection caselet

Suppose Centre A registered 300 candidates, 270 appeared and 180 qualified. There are 30 absentees: registered minus appeared. There are 90 who appeared but did not qualify: appeared minus qualified. There are 120 registered candidates who did not qualify, but that last group includes both absentees and unsuccessful attendees. Do not use the same subtraction for all three wordings. The population named in the question determines which total is the starting point.

If the question asks the qualification rate among those who appeared, calculate 180/270=66.7% approximately. If it asks the rate among those registered, calculate 180/300=60%. These are both legitimate rates and neither substitutes for the other. Put the phrase “among appeared” or “among registered” directly under the fraction bar. This habit prevents the most common caselet error: a correct numerator with the wrong denominator.

Build a compact four-centre table

For each centre, make three columns: R, A and Q. Check the logical order 0≤Q≤A≤R before calculating. If a passage seems to violate that order, reread the labels; it may be discussing a different period or category. To find total appeared, add the A column only. To find total qualified, add Q only. To find which centre had the most qualified, compare Q values rather than qualification rates. A small centre can have the highest rate but a lower absolute count.

Translate prose precisely

Words such as “of those who appeared” create nested bases. If 80% of registered candidates appeared and 60% of those appearing qualified, the qualified share of registered candidates is 0.80×0.60=0.48, or 48%. Do not add the two percentages. When a passage gives actual counts instead, derive rates from the counts only after identifying the population. For each practice item, locate the three figures in its own caselet and write one equation. The same types of calculation recur, but the data and the relevant centre change from item to item.

Practice — 50 questions

Attempt every item before reading the answers. Use the chart or caselet printed with the question.

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 160, 120, 100; Centre B: 180, 150, 120; Centre C: 140, 90, 70; Centre D: 130, 90, 70. Use only these figures for the question.

1. How many registered candidates at Centre A did not appear?

A. 50 B. 60 C. 30 D. 40

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 220, 170, 130; Centre B: 220, 170, 130; Centre C: 150, 100, 80; Centre D: 160, 140, 110. Use only these figures for the question.

2. How many candidates who appeared at Centre B did not qualify?

A. 50 B. 60 C. 40 D. 30

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 130, 110, 70; Centre B: 270, 230, 190; Centre C: 150, 120, 80; Centre D: 270, 230, 190. Use only these figures for the question.

3. How many candidates qualified at Centres C and D together?

A. 260 B. 270 C. 290 D. 280

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 180, 150, 130; Centre B: 190, 160, 130; Centre C: 180, 130, 100; Centre D: 190, 150, 110. Use only these figures for the question.

4. How many candidates appeared across all four centres?

A. 600 B. 590 C. 580 D. 610

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 130, 100, 60; Centre B: 270, 220, 200; Centre C: 210, 190, 160; Centre D: 220, 200, 160. Use only these figures for the question.

5. What is the largest qualified-candidate count among the centres?

A. 190 B. 220 C. 200 D. 210

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 180, 140, 100; Centre B: 240, 210, 180; Centre C: 240, 190, 170; Centre D: 200, 150, 120. Use only these figures for the question.

6. How many registered candidates at Centre A did not appear?

A. 50 B. 60 C. 30 D. 40

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 180, 130, 100; Centre B: 140, 120, 80; Centre C: 230, 180, 160; Centre D: 220, 200, 180. Use only these figures for the question.

7. How many candidates who appeared at Centre B did not qualify?

A. 50 B. 30 C. 60 D. 40

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 190, 170, 130; Centre B: 270, 230, 210; Centre C: 260, 240, 220; Centre D: 150, 130, 110. Use only these figures for the question.

8. How many candidates qualified at Centres C and D together?

A. 320 B. 350 C. 340 D. 330

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 180, 160, 140; Centre B: 150, 130, 90; Centre C: 120, 90, 70; Centre D: 210, 180, 150. Use only these figures for the question.

9. How many candidates appeared across all four centres?

A. 560 B. 580 C. 570 D. 550

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 270, 230, 200; Centre B: 180, 130, 100; Centre C: 210, 190, 170; Centre D: 140, 100, 80. Use only these figures for the question.

10. What is the largest qualified-candidate count among the centres?

A. 190 B. 200 C. 210 D. 220

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 140, 110, 80; Centre B: 270, 250, 210; Centre C: 160, 110, 70; Centre D: 150, 130, 90. Use only these figures for the question.

11. How many registered candidates at Centre A did not appear?

A. 40 B. 20 C. 30 D. 50

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 230, 190, 150; Centre B: 190, 160, 120; Centre C: 230, 210, 190; Centre D: 240, 220, 200. Use only these figures for the question.

12. How many candidates who appeared at Centre B did not qualify?

A. 60 B. 40 C. 50 D. 30

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 210, 160, 140; Centre B: 180, 130, 90; Centre C: 210, 190, 150; Centre D: 130, 100, 80. Use only these figures for the question.

13. How many candidates qualified at Centres C and D together?

A. 230 B. 220 C. 240 D. 250

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 150, 130, 90; Centre B: 140, 110, 90; Centre C: 170, 130, 100; Centre D: 230, 190, 170. Use only these figures for the question.

14. How many candidates appeared across all four centres?

A. 560 B. 580 C. 570 D. 550

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 130, 90, 70; Centre B: 220, 180, 140; Centre C: 220, 200, 160; Centre D: 190, 140, 110. Use only these figures for the question.

15. What is the largest qualified-candidate count among the centres?

A. 160 B. 170 C. 150 D. 180

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 150, 130, 90; Centre B: 270, 230, 210; Centre C: 270, 230, 210; Centre D: 270, 250, 220. Use only these figures for the question.

16. How many registered candidates at Centre A did not appear?

A. 10 B. 30 C. 40 D. 20

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 160, 130, 110; Centre B: 240, 200, 160; Centre C: 210, 160, 120; Centre D: 210, 190, 160. Use only these figures for the question.

17. How many candidates who appeared at Centre B did not qualify?

A. 50 B. 60 C. 30 D. 40

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 250, 200, 180; Centre B: 190, 160, 120; Centre C: 260, 220, 190; Centre D: 140, 90, 50. Use only these figures for the question.

18. How many candidates qualified at Centres C and D together?

A. 260 B. 240 C. 250 D. 230

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 150, 100, 70; Centre B: 160, 120, 100; Centre C: 260, 240, 210; Centre D: 170, 140, 120. Use only these figures for the question.

19. How many candidates appeared across all four centres?

A. 610 B. 600 C. 590 D. 620

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 120, 90, 60; Centre B: 190, 150, 120; Centre C: 220, 190, 170; Centre D: 250, 200, 170. Use only these figures for the question.

20. What is the largest qualified-candidate count among the centres?

A. 190 B. 180 C. 170 D. 160

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 200, 150, 110; Centre B: 220, 190, 160; Centre C: 130, 100, 70; Centre D: 160, 130, 90. Use only these figures for the question.

21. How many registered candidates at Centre A did not appear?

A. 60 B. 50 C. 40 D. 70

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 140, 100, 70; Centre B: 200, 150, 120; Centre C: 140, 100, 60; Centre D: 220, 180, 140. Use only these figures for the question.

22. How many candidates who appeared at Centre B did not qualify?

A. 50 B. 40 C. 30 D. 20

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 130, 80, 40; Centre B: 250, 200, 170; Centre C: 240, 190, 170; Centre D: 130, 110, 80. Use only these figures for the question.

23. How many candidates qualified at Centres C and D together?

A. 250 B. 260 C. 240 D. 270

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 210, 170, 130; Centre B: 190, 140, 120; Centre C: 160, 130, 110; Centre D: 200, 180, 150. Use only these figures for the question.

24. How many candidates appeared across all four centres?

A. 640 B. 630 C. 610 D. 620

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 230, 180, 150; Centre B: 270, 220, 200; Centre C: 180, 150, 110; Centre D: 270, 220, 200. Use only these figures for the question.

25. What is the largest qualified-candidate count among the centres?

A. 200 B. 220 C. 210 D. 190

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 260, 230, 200; Centre B: 270, 220, 180; Centre C: 250, 200, 170; Centre D: 230, 200, 180. Use only these figures for the question.

26. How many registered candidates at Centre A did not appear?

A. 20 B. 30 C. 50 D. 40

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 220, 170, 150; Centre B: 210, 160, 130; Centre C: 230, 200, 160; Centre D: 210, 160, 130. Use only these figures for the question.

27. How many candidates who appeared at Centre B did not qualify?

A. 50 B. 40 C. 20 D. 30

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 160, 120, 100; Centre B: 260, 220, 180; Centre C: 120, 100, 70; Centre D: 120, 80, 40. Use only these figures for the question.

28. How many candidates qualified at Centres C and D together?

A. 130 B. 110 C. 100 D. 120

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 250, 200, 180; Centre B: 190, 160, 130; Centre C: 220, 200, 170; Centre D: 120, 100, 60. Use only these figures for the question.

29. How many candidates appeared across all four centres?

A. 670 B. 650 C. 660 D. 680

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 260, 230, 210; Centre B: 170, 150, 130; Centre C: 240, 220, 190; Centre D: 250, 200, 170. Use only these figures for the question.

30. What is the largest qualified-candidate count among the centres?

A. 210 B. 230 C. 200 D. 220

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 170, 120, 100; Centre B: 160, 130, 110; Centre C: 140, 110, 90; Centre D: 120, 80, 60. Use only these figures for the question.

31. How many registered candidates at Centre A did not appear?

A. 60 B. 40 C. 70 D. 50

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 260, 240, 200; Centre B: 250, 230, 190; Centre C: 230, 180, 160; Centre D: 240, 220, 190. Use only these figures for the question.

32. How many candidates who appeared at Centre B did not qualify?

A. 60 B. 30 C. 40 D. 50

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 200, 160, 140; Centre B: 220, 190, 170; Centre C: 120, 80, 40; Centre D: 140, 120, 80. Use only these figures for the question.

33. How many candidates qualified at Centres C and D together?

A. 140 B. 120 C. 130 D. 110

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 250, 230, 190; Centre B: 170, 120, 100; Centre C: 220, 170, 150; Centre D: 170, 140, 100. Use only these figures for the question.

34. How many candidates appeared across all four centres?

A. 670 B. 680 C. 650 D. 660

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 120, 100, 80; Centre B: 210, 160, 130; Centre C: 200, 170, 140; Centre D: 210, 190, 170. Use only these figures for the question.

35. What is the largest qualified-candidate count among the centres?

A. 190 B. 170 C. 180 D. 160

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 270, 220, 180; Centre B: 190, 150, 110; Centre C: 240, 220, 190; Centre D: 150, 100, 60. Use only these figures for the question.

36. How many registered candidates at Centre A did not appear?

A. 60 B. 40 C. 50 D. 70

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 210, 190, 170; Centre B: 160, 140, 120; Centre C: 230, 190, 160; Centre D: 190, 170, 140. Use only these figures for the question.

37. How many candidates who appeared at Centre B did not qualify?

A. 20 B. 10 C. 30 D. 40

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 190, 140, 120; Centre B: 140, 120, 90; Centre C: 170, 140, 110; Centre D: 120, 80, 40. Use only these figures for the question.

38. How many candidates qualified at Centres C and D together?

A. 170 B. 150 C. 160 D. 140

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 120, 100, 80; Centre B: 150, 120, 90; Centre C: 260, 220, 200; Centre D: 150, 120, 100. Use only these figures for the question.

39. How many candidates appeared across all four centres?

A. 570 B. 560 C. 550 D. 580

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 180, 140, 120; Centre B: 160, 140, 100; Centre C: 260, 220, 200; Centre D: 130, 80, 50. Use only these figures for the question.

40. What is the largest qualified-candidate count among the centres?

A. 200 B. 190 C. 210 D. 220

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 190, 140, 120; Centre B: 200, 180, 160; Centre C: 270, 250, 210; Centre D: 210, 160, 120. Use only these figures for the question.

41. How many registered candidates at Centre A did not appear?

A. 40 B. 70 C. 60 D. 50

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 220, 190, 170; Centre B: 140, 120, 100; Centre C: 150, 110, 90; Centre D: 210, 190, 160. Use only these figures for the question.

42. How many candidates who appeared at Centre B did not qualify?

A. 40 B. 20 C. 10 D. 30

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 140, 100, 80; Centre B: 220, 200, 160; Centre C: 270, 230, 190; Centre D: 250, 220, 180. Use only these figures for the question.

43. How many candidates qualified at Centres C and D together?

A. 390 B. 380 C. 370 D. 360

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 250, 220, 180; Centre B: 160, 130, 110; Centre C: 150, 110, 90; Centre D: 180, 130, 100. Use only these figures for the question.

44. How many candidates appeared across all four centres?

A. 600 B. 580 C. 610 D. 590

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 170, 130, 90; Centre B: 200, 160, 140; Centre C: 240, 190, 160; Centre D: 260, 220, 180. Use only these figures for the question.

45. What is the largest qualified-candidate count among the centres?

A. 170 B. 180 C. 200 D. 190

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 140, 110, 80; Centre B: 170, 130, 90; Centre C: 120, 90, 60; Centre D: 250, 220, 200. Use only these figures for the question.

46. How many registered candidates at Centre A did not appear?

A. 20 B. 40 C. 30 D. 50

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 200, 180, 150; Centre B: 170, 150, 130; Centre C: 220, 200, 160; Centre D: 270, 230, 210. Use only these figures for the question.

47. How many candidates who appeared at Centre B did not qualify?

A. 40 B. 20 C. 30 D. 10

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 180, 150, 120; Centre B: 160, 120, 90; Centre C: 140, 90, 70; Centre D: 250, 230, 200. Use only these figures for the question.

48. How many candidates qualified at Centres C and D together?

A. 270 B. 290 C. 260 D. 280

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 130, 80, 60; Centre B: 160, 140, 110; Centre C: 220, 170, 130; Centre D: 140, 120, 80. Use only these figures for the question.

49. How many candidates appeared across all four centres?

A. 500 B. 510 C. 520 D. 530

Caselet. Four training centres reported the following synthetic practice data. For each centre, the figures are registered candidates, candidates who appeared, and candidates who qualified, in that order: Centre A: 210, 190, 160; Centre B: 160, 140, 110; Centre C: 260, 220, 200; Centre D: 130, 100, 70. Use only these figures for the question.

50. What is the largest qualified-candidate count among the centres?

A. 200 B. 190 C. 210 D. 220

Answers and explanations

Check the value and the unit before comparing your working with the calculation.

1. D. Centre A registered 160 and 120 appeared. Subtract: 160−120=40.

APDI26-09-01 | caselet-di | Easy

2. C. Centre B had 170 appearances and 130 qualifications. Difference 40.

APDI26-09-02 | caselet-di | Easy

3. B. Add the qualified counts at C and D: 80+190=270.

APDI26-09-03 | caselet-di | Easy

4. B. Add the four appeared counts [150, 160, 130, 150]: total 590.

APDI26-09-04 | caselet-di | Easy

5. C. Compare the qualified counts [60, 200, 160, 160]; the largest count is 200.

APDI26-09-05 | caselet-di | Easy

6. D. Centre A registered 180 and 140 appeared. Subtract: 180−140=40.

APDI26-09-06 | caselet-di | Easy

7. D. Centre B had 120 appearances and 80 qualifications. Difference 40.

APDI26-09-07 | caselet-di | Easy

8. D. Add the qualified counts at C and D: 220+110=330.

APDI26-09-08 | caselet-di | Easy

9. A. Add the four appeared counts [160, 130, 90, 180]: total 560.

APDI26-09-09 | caselet-di | Easy

10. B. Compare the qualified counts [200, 100, 170, 80]; the largest count is 200.

APDI26-09-10 | caselet-di | Easy

11. C. Centre A registered 140 and 110 appeared. Subtract: 140−110=30.

APDI26-09-11 | caselet-di | Easy

12. B. Centre B had 160 appearances and 120 qualifications. Difference 40.

APDI26-09-12 | caselet-di | Easy

13. A. Add the qualified counts at C and D: 150+80=230.

APDI26-09-13 | caselet-di | Easy

14. A. Add the four appeared counts [130, 110, 130, 190]: total 560.

APDI26-09-14 | caselet-di | Easy

15. A. Compare the qualified counts [70, 140, 160, 110]; the largest count is 160.

APDI26-09-15 | caselet-di | Easy

16. D. Centre A registered 150 and 130 appeared. Subtract: 150−130=20.

APDI26-09-16 | caselet-di | Medium

17. D. Centre B had 200 appearances and 160 qualifications. Difference 40.

APDI26-09-17 | caselet-di | Medium

18. B. Add the qualified counts at C and D: 190+50=240.

APDI26-09-18 | caselet-di | Medium

19. B. Add the four appeared counts [100, 120, 240, 140]: total 600.

APDI26-09-19 | caselet-di | Medium

20. C. Compare the qualified counts [60, 120, 170, 170]; the largest count is 170.

APDI26-09-20 | caselet-di | Medium

21. B. Centre A registered 200 and 150 appeared. Subtract: 200−150=50.

APDI26-09-21 | caselet-di | Medium

22. C. Centre B had 150 appearances and 120 qualifications. Difference 30.

APDI26-09-22 | caselet-di | Medium

23. A. Add the qualified counts at C and D: 170+80=250.

APDI26-09-23 | caselet-di | Medium

24. D. Add the four appeared counts [170, 140, 130, 180]: total 620.

APDI26-09-24 | caselet-di | Medium

25. A. Compare the qualified counts [150, 200, 110, 200]; the largest count is 200.

APDI26-09-25 | caselet-di | Medium

26. B. Centre A registered 260 and 230 appeared. Subtract: 260−230=30.

APDI26-09-26 | caselet-di | Medium

27. D. Centre B had 160 appearances and 130 qualifications. Difference 30.

APDI26-09-27 | caselet-di | Medium

28. B. Add the qualified counts at C and D: 70+40=110.

APDI26-09-28 | caselet-di | Medium

29. C. Add the four appeared counts [200, 160, 200, 100]: total 660.

APDI26-09-29 | caselet-di | Medium

30. A. Compare the qualified counts [210, 130, 190, 170]; the largest count is 210.

APDI26-09-30 | caselet-di | Medium

31. D. Centre A registered 170 and 120 appeared. Subtract: 170−120=50.

APDI26-09-31 | caselet-di | Medium

32. C. Centre B had 230 appearances and 190 qualifications. Difference 40.

APDI26-09-32 | caselet-di | Medium

33. B. Add the qualified counts at C and D: 40+80=120.

APDI26-09-33 | caselet-di | Medium

34. D. Add the four appeared counts [230, 120, 170, 140]: total 660.

APDI26-09-34 | caselet-di | Medium

35. B. Compare the qualified counts [80, 130, 140, 170]; the largest count is 170.

APDI26-09-35 | caselet-di | Medium

36. C. Centre A registered 270 and 220 appeared. Subtract: 270−220=50.

APDI26-09-36 | caselet-di | Medium

37. A. Centre B had 140 appearances and 120 qualifications. Difference 20.

APDI26-09-37 | caselet-di | Medium

38. B. Add the qualified counts at C and D: 110+40=150.

APDI26-09-38 | caselet-di | Medium

39. B. Add the four appeared counts [100, 120, 220, 120]: total 560.

APDI26-09-39 | caselet-di | Medium

40. A. Compare the qualified counts [120, 100, 200, 50]; the largest count is 200.

APDI26-09-40 | caselet-di | Medium

41. D. Centre A registered 190 and 140 appeared. Subtract: 190−140=50.

APDI26-09-41 | caselet-di | Difficult

42. B. Centre B had 120 appearances and 100 qualifications. Difference 20.

APDI26-09-42 | caselet-di | Difficult

43. C. Add the qualified counts at C and D: 190+180=370.

APDI26-09-43 | caselet-di | Difficult

44. D. Add the four appeared counts [220, 130, 110, 130]: total 590.

APDI26-09-44 | caselet-di | Difficult

45. B. Compare the qualified counts [90, 140, 160, 180]; the largest count is 180.

APDI26-09-45 | caselet-di | Difficult

46. C. Centre A registered 140 and 110 appeared. Subtract: 140−110=30.

APDI26-09-46 | caselet-di | Difficult

47. B. Centre B had 150 appearances and 130 qualifications. Difference 20.

APDI26-09-47 | caselet-di | Difficult

48. A. Add the qualified counts at C and D: 70+200=270.

APDI26-09-48 | caselet-di | Difficult

49. B. Add the four appeared counts [80, 140, 170, 120]: total 510.

APDI26-09-49 | caselet-di | Difficult

50. A. Compare the qualified counts [160, 110, 200, 70]; the largest count is 200.

APDI26-09-50 | caselet-di | Difficult