SSC CPO practice question
Find the next number in the series: 4, 9, 20, 43, 90, ?
From a SSC CPO Reasoning practice set ┬╖ Reasoning
Tap an option to check your answer.
Show answer and explanation
Correct answer: (A) 185
Each term is obtained by doubling the previous difference and adding 1: the differences are 5, 11, 23, 47, 95 (each = previous times 2 plus 1); so the next term = 90 + 95 = 185.
рд╣рд┐рдВрджреА рдореЗрдВ рдкреНрд░рд╢реНрди
рд╢реНрд░реГрдВрдЦрд▓рд╛ рдореЗрдВ рдЕрдЧрд▓реА рд╕рдВрдЦреНрдпрд╛ рдЬреНрдЮрд╛рдд рдХреАрдЬрд┐рдП: 4, 9, 20, 43, 90, ?
рдЙрддреНрддрд░ рдЬрд╛рдБрдЪрдиреЗ рдХреЗ рд▓рд┐рдП рдХрд┐рд╕реА рд╡рд┐рдХрд▓реНрдк рдкрд░ рдЯреИрдк рдХрд░реЗрдВред
рдЙрддреНрддрд░ рдФрд░ рд╡реНрдпрд╛рдЦреНрдпрд╛ рджреЗрдЦреЗрдВ
рд╕рд╣реА рдЙрддреНрддрд░: (A) 185
рдкреНрд░рддреНрдпреЗрдХ рдкрдж рдкрд┐рдЫрд▓реЗ рдЕрдВрддрд░ рдХреЛ рджреЛрдЧреБрдирд╛ рдХрд░рдХреЗ 1 рдЬреЛрдбрд╝рдиреЗ рд╕реЗ рдкреНрд░рд╛рдкреНрдд рд╣реЛрддрд╛ рд╣реИ: рдЕрдВрддрд░ 5, 11, 23, 47, 95 рд╣реИрдВ (рдкреНрд░рддреНрдпреЗрдХ = рдкрд┐рдЫрд▓рд╛ рдЧреБрдирд╛ 2 рдЬреЛрдбрд╝ 1); рдЕрддрдГ рдЕрдЧрд▓рд╛ рдкрдж = 90 + 95 = 185ред
More solved Reasoning questions
- Find the simple interest on тВ╣7499 at 6% per annum for 4 years.
- In a class of 45 students, Aman's rank is 12th from the top. What is his rank from the bottom?
- A cube is painted green on all faces and cut into 2,744 identical smaller cubes (14├Ч14├Ч14). How many have exactly 2 faces painted?
- Find the next number in the series: 346, 515, 732, 1003, ?
- Find the simple interest on тВ╣1875 at 12% per annum for 3 years.
- In a competition of 60 participants, Ananya is ranked 25th from the top. Find her rank from the bottom.