Question

Which one of the following numbers is divisible by 3.

• A. 2146585
• B. 2146586
• C. 2146587
• D. 2146588

Answer 1

The correct option is C

2146587

A number is divisible by 3 only when the sum of its digits is divisible by 3.

Consider 2146585

2 + 1 + 4 + 6 + 5 + 8 + 5 = 31

The sum of the digits of the given number is 31 which is not divisible by 3.

Consider 2146586

2 + 1 + 4 + 6 + 5 + 8 + 6 = 32

The sum of the digits of the given number is 32 which is not divisible by 3.

Consider 2146587

2 + 1 + 4 + 6 + 5 + 8 + 5 = 33

The sum of the digits of the given number is 33 which is divisible by 3.

Consider 2146588

2 + 1 + 4 + 6 + 5 + 8 + 5 = 34

The sum of the digits of the given number is 31 which is not divisible by 3.