SOLVED PAPER 2023 (CDS) (II) (Elementary Mathematics)

Total Questions: 100

11. Find the value of this -

Correct Answer: (a) Only one
Solution:

12. Find the value of this -

Correct Answer: (d) 4
Solution:

13. Let L be the LCM and H be the HCF of two given numbers. L and H are in the ratio 3 : 2. If the sum of the two numbers is 45, then what is the product of the numbers?

Correct Answer: (d) Cannot be determined due to insufficient data
Solution:

14. A man walks at an average speed of 3 km/h from his home and reaches office 40 min early. If he walks at an average speed of 2 km/h, he would reach office 40 min late. What is the distance between his home and office?

Correct Answer: (b) 8 km
Solution:

15. 3ˣ⁻¹ + 3³⁻ˣ = 6 then what is 2ˣ⁻¹ + 2³⁻ˣ equal to?

Correct Answer: (a) 4
Solution:

16. Find the value of this -

Correct Answer: (a) - 2b³
Solution:

17. Solved

Correct Answer: (c)
Solution:

18. Solved

Correct Answer: (d) 210
Solution:

19. What is the HCF of

acx³ +bcx² + adx² + acdx + bdx
+bcd and adx³+acx²+ bdx²
+bcx + acdx + bcd, if HCF (c,d) = 1 c ≠ d?

Correct Answer: (d) ax + b
Solution:

20. If xⁿ - pyⁿ + qzⁿ is divisible by

x² + abyz - bzx - axy, then what is
(p ÷ aⁿ - q ÷ bⁿ) equal to

Correct Answer: (c) 1
Solution: