What is the remainder let after dividing 1!+2!+3!.....+10! by 7?

0

5

14

21

Correct Answer : B

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