# Number System · Basic Numeracy · UPSC Civil Service

Start Practice## MCQ (Single Correct Answer)

UPSC Civil Service Prelims Paper II 2023 (CSAT)

Consider the following in respect of prime number p and composite number c.
1. $\frac{\mathrm{p}+\mathrm{c}}{\mathrm{p}-\mathrm{c}}$ can be even.
2....

UPSC Civil Service Prelims Paper II 2023 (CSAT)

Let x be a positive integer such that 7x + 96 is divisible by x. How many values of x are possible?

UPSC Civil Service Prelims Paper II 2023 (CSAT)

A number N is formed by writing 9 for 99 times. What is the remainder if N is divided by 13?