Number System (QUANTITATIVE APTITUDE) EPFO UPSC

Total Questions: 30

11. A, B, C, D and E are five consecutive odd numbers. The sum of A and C is 146. What is the value of E?

Correct Answer: (d) 79
Solution:

12. The sum of the squares of two consecutive even numbers is 6500. Which is the smaller number?

Correct Answer: (d) 56
Solution:

13. How many perfect squares lie between 120 and 300?

Correct Answer: (c) 7
Solution:

14. The remainder when 3²¹ is divided by 5 is

Correct Answer: (c) 3
Solution:

15. The last digit of (1001)²⁰⁰⁸ + 1002 is

Correct Answer: (b) 3
Solution:

16. If x * y = (x + 3)² (y − 1), then the value of 5 * 4 is

Correct Answer: (a) 192  
Solution:

17. If a * b = aᵇ, then the value of 5 * 3 is

Correct Answer: (a) 125
Solution:

18. (1 + 0.6 + 0.06 + 0.006 .....) is

Correct Answer: (a)
Solution:

19. A number, when divided by 114, leaves remainder 21. If the same number is divided by 19, then the remainder will be

Correct Answer: (b) 2
Solution:

20. A number, when divided by 136, leaves remainder 36. If the same number is divided by 17, the remainder will be

Correct Answer: (d) 2
Solution: