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Divisibility tests of common numbers

Divisibility of different numbers has been listed below: Divisibility by 2 : A number is divisible by 2, if its unit digits is any of 0,2,4,6,8. In other words, when the unit's place digit is even or zero (0). Divisibility by 3 : A number is divisible by 3 only when the sum of its digits is divisible by 3. In other words,  All numbers with a digit sum of three (3), six (6) or nine (9) are divisible by 3.