Mathematics NDA/NA SOLVED PAPER 2018 (I) (01 to 50)

Total Questions: 50

31. What is the sum of all two-digit numbers, which when divided by 3 leave 2 as the remainder?

Correct Answer: (c) 1635
Solution:

32. If 0 > a > 1, the value of log₁₀ a is negative. This is justified by:

Correct Answer: (b) Negative power of 10 is between 0 and 1
Solution:

33. The third term of a GP is 3. What is the product of the first five terms?

Correct Answer: (c) 243
Solution:

34. If x, 3/2, z are in AP; x, 3, z are in GP; then which one of the following will be in HP?

Correct Answer: (a) x, 6, z
Solution:

35. Answer the following question?

Correct Answer: (c) − 2i
Solution:

36. Simplify the equation?

Correct Answer: (b) π/2
Solution:

37. Simplify the equation?

Correct Answer: (c) tanx
Solution:

38. What is sin105° + cos105° equal to?

Correct Answer: (c) 1/√2
Solution:

39. In a ∆ABC, if a = 2, b = 3 and sin A = 2/3, then what is <B equal to?

Correct Answer: (b) π/2
Solution:

40. What is the principal value of sin⁻¹(sin 2π/3)?

Correct Answer: (c) π/3
Solution: