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Q: What is the divisiblity rule for 15?

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No rule

if the number is divisible by 2 and 3 then it is divisible by 6 =D

The rule to decide if a number is divisible by 9 is to look at the sum of the digits. If the sum of the digits is divisible by 9, then so is the number.

Add the digits together and if the result is divisible by 9, the original number is divisible by 9.

To find out if a number is divisible by 8 the number must be divisible by 2 and 4!

60.

-9

Just carry out the division, and see if you get an integer. It isn't worth the trouble to memorize or, worse, figure out divisibility rules for all sorts of large numbers.

No - because it's an odd number !

The only number by which four is divisible is two.

If the sum of the digits is a multiple of 3, yhen the number is divisible by 3.

The rule is 10

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