If the sum of digits of a number is divisible by three,

Question:

 If the sum of digits of a number is divisible by three, then the number is always divisible by 

(a) 2

(b) 3

(c) 6

(d) 9

Solution:

(b) We know that, if sum of digits of a number is divisible by three, then the number must be divisible by 3, i.e. the remainder obtained by dividing the

number by 3 is same as the remainder obtained by dividing the sum of its digits by 3.

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