Test 79,112 for divisibility by 2,3,5,9, or 10

Question

Mathematics

Haleigh Henderson

2 December, 16:47

Test 79,112 for divisibility by 2,3,5,9, or 10

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Answers (1)

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Darrell Stuart · Answer 1

If a number is divisible by 2, it will be even. This means it will end in a 0, 2, 4, 6, or 8. 79,112 ends in a 2, so it is divisible by 2.

If a number is divisible by 3, the sum of its individual numbers will be divisible by 3 as well. Since 7+9+1+1+2=20, and 20 is not divisible by 3, 79,112 is not divisible by 3.

If a number is divisible by 5, it will end in a 5 or a 0. 79,112 does not, so it is not divisible by 5.

If a number is divisible by 9, the sum of its individual numbers will be divisible by 9 as well. Since 7+9+1+1+2=20, and 20 is not divisible by 9, 79,112 is not divisible by 9.

If a number is divisible by 10, it will end in a 0. 79,112 does not, so it is not divisible by 10.