Signs of the divisibility of integers HANDBOOK

The number is divisible by 2 if its last digit is divisible by 2.
The number is divided by 3 (or 9), if the sum of its digits is divided by 3 (or 9).
The number is divisible by 5 if it ends in 0 or 5.

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Signs of the divisibility of integers

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HANDBOOK ON MATHEMATICS, SCHOOL MATHEMATICS, HIGHER MATHEMATICS

Terms: HANDBOOK ON MATHEMATICS, SCHOOL MATHEMATICS, HIGHER MATHEMATICS