Question

Use the tests for divisibility to determine which numbers divide evenly into the given number. 39,960

2
3
4
5
6
9
10
none

Answer 1

39,960 is divisible by all of the listed numbers.

Explanation:

The sum of digits is 3+9+9+6+0 = 27, and the sum of those digits is 2+7=9.

This tells you the number is divisible by 3 and 9.

The number is even and ends in 0. Together with divisibility by 3, this tells you the number is divisible by 6. The 0-ending tells you the number is divisible by 2 and 5 and 10.

The last two digits are 60, a number that is divisible by 4, so the number is divisible by 4.

39,960 is divisible by all of the numbers listed: 2, 3, 4, 5, 6, 9, 10.