check the divisibility of 2 and 3
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2 The last digit is even (0, 2, 4, 6, or 8).
3 Sum the digits. The result must be divisible by 3.
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A number can divisible with 2, if the last digit of the number is even. for eg. 162 is divisible with 2 because the last digit is even, while 163 is not divisible by 2 because the last digit is odd.
A number can divisible by 3, if the sum of digits of the number is divisible by 3. For eg. 231 is divisible by 3 because the sum of the digits of 231 is 6 and 6 is divisible by 3, therefore 231 is divisible by 3. Whereas, 232 is not divisible by 3, because the sum of digits of the number is not divisible by 3.
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