A number is divisible by 3 only when:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. the sum of its digits is divisible by 3.
A number is divisible by 3 only when the sum of individual digits is divisible by 3.
Example - 222 i.e (2 + 2 + 2 = 6)
⇒ 6/3 = 2
Thus, 222 is divisible by 3.