The number 3 divides ‘a’ with a result of ‘b’ and a remainder of 2. The number 3 divides ‘b’ with a result of 2 and a remainder of 1. What is the value of a?

13

17

21

23

Correct Answer : D

The remainder when 7^{84} is divided by 342 is

If X is an odd integer, which of the following must be odd?

1. 2x + x II. x + x + x III. x * x * x

The difference between the greatest number and the smallest number of 6 digits using all but