if the of sum of digits is divisible by 3
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If the sum of the digits of a number is divisible by 3, then the number is divisible by 3. Some examples of numbers divisible by 3 are as follows. The number 85203 is divisible by 3 because the sum of its digits 8+5+2+0+3=18 is divisible by 3.
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(1) since the sum of the digits is divisible by the 3,therefore the no 111 is also divisible by 3. (2) which of the two nos 522 and 713 are divisible by 3. the sum of the digits of the no 522 (5+2+2=9)is 9 which is divisible by 3.
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