If the of digits of a number is divisible by 3, then the number is divisible by 3.
A
product
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B
sum
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C
difference
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Solution
The correct option is B sum Divisibility Rule for 3 : If the sum of digits of a number is divisible by 3, then the number is divisible by 3.
For example : 531 is divisible by 3 as sum of its digits 5+3+1=9 is divisible by 3.