RRB Technician Grade 3 previous year question
Find the third proportional to a³ − b³ and a² + b² + ab, when a = 16 and b = 12.
Asked in RRB Technician Grade 3 (10 Mar 2026 Shift 3) · Quantitative Aptitude
Tap an option to check your answer.
Show answer and explanation
Correct answer: (C) 148
a³-b³=2368 and a²+b²+ab=592 for a=16,b=12. Third proportional = 592²/2368 = 148.
हिंदी में प्रश्न
जब a = 16 और b = 12 है, तो a³ − b³ और a² + b² + ab का तृतीय समानुपातिक ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 148
a=16,b=12 के लिए a³-b³=2368 और a²+b²+ab=592। तृतीयानुपाती = 592²/2368 = 148 प्राप्त होता है।
More solved Quantitative Aptitude questions
- The average age of six girls increases by four months, if a 12-year old girl is replaced by a new girl. The age of the new girl is:
- During a sale, 44% of the goods are sold at a profit of 47%. Of the remaining goods, 25% are sold at a profit of 22%, and the rest are…
- The salary of Mina is ₹80,000. Out of which she deposits x% amount at 15% simple interest. If the accumulated amount for the money…
- Sushma, a trader in Bhopal, gives a customer buying kitchenware the choice of either paying Rs. 4000 in cash today, or Rs. 4900 after 15…
- A trader wants to prepare 15 kg of a mixture worth ₹56/kg by mixing tea worth ₹48/kg with tea worth ₹64/kg. How much of the cheaper tea…
- In a 400 m race, A can give B a start of 80 m and C a start of 120 m. How much start can B give C in a 320 m race?