2, If the last digit is 0,2,4,6 or 8., 3, If the sum of the digits is divisible by 3., 4, If the last two digits is divisible by 4., 5, If the last digit is 0 or 5., 6, If the number is divisible by 2 and 3., 7, Cross off the last digit, double it and subtract., 8, If the last 3 digits is divisible by 8., 9, If the sum of the digits is divisible by 9., 10, If the last digit is 0., 12, If the number is divisible by 3 and 4.

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