Question

Using divisibility test, determine which of the following numbers are divisible by 4?

(a) 4096

(b) 21084

(c) 31795014

Answer 1

We know that a number is divisible by 4, if its last two digits or digits at ten's and one's place are divisible by 4.

(a) 4096

4096 is divisible by 4, since its last two digits, i.e., 96 is divisible by 4.

(b) 21084

21084 is divisible by 4, since its last two digits, i.e., 84 is divisible by 4.

(c) 31795014

31795014 is not divisible by 4, since its last two digits, i.e., 14 is not divisible by 4.