Question

Determine which of the following numbers are divisible by 4.

• A. 4096
• B. 21084
• C. 294
• D. 513

Answer 1

Answer: (A), (B)

The correct options are
A

4096

B

21084

A number is divisible by 4 if the last two digits of the whole number are divisible 4.
(a) Since the number formed by tens and units digit is 96, which is divisible by 4, hence, 4096 is divisible by 4.
(b) Since the number formed by tens and units digit is 84, which is divisible by 4, hence, 21084 is divisible by 4.

(c) Last two digits in 294 are 94, which is not divisible by 4, hence 294 is not divisible by 4

(d) Last two digits in 513 are 13, which is not divisible by 4, hence 513 is not divisible by 4