Mathematics MCQs

Number System Questions with solutions MCQs

1. If X and Y are integers and we subtract them we get even. Which case will be even always?

A

XY

B

X^2+Y^2-1

C

XY-Y

D

X^2+Y+1

Number System Data Entry Operator 2023
Correct Answer : C
Explanation :

XY-Y=Y(X-1) is always even.

Correct Answered :

Wrong Answered :

2. P and Q are two positive integers such that PQ = 64. Which of the following cannot be the value of P + Q?

A

16

B

20

C

35

D

65

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Correct Answer : D
Explanation :

PQ=64 possible pairs don?t give sum 65, hence it is not possible.

Correct Answered :

Wrong Answered :

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