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Signs of the divisibility of integers
Lecture
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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HANDBOOK ON MATHEMATICS, SCHOOL MATHEMATICS, HIGHER MATHEMATICS
Terms: HANDBOOK ON MATHEMATICS, SCHOOL MATHEMATICS, HIGHER MATHEMATICS