Question

By which of the following numbers is 392 divisible?

• A. 9
• B. 3
• C. 2
• D. 4

Answer 1

Answer: (C), (D)

The correct options are
C 2
D 4

A number is divisible by 3 or 9 if the sum of its digits is divisible by 3 or 9 respectively.

Here, sum of digits = 3 + 9 + 2 = 14 which is not divisible by either 3 or 9. Hence, the number is not divisible by 3 and 9.

Being an even number, the given number is divisible by 2.

A number is divisible by 4 if the number formed by the last two digits are divisible by 4.
In 392, 92 which is divisible by 4. Hence, the number is also divisible by 4.