Q: When is a number divisible by 12?

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Absolutely - any number that is divisible by 12 - is also divisible by 6 !

A number is divisible by 12 if it is divisible by 3 AND it is divisible by 4. Rule 1a (Divisibility by 3): Add up all the digits of the number. Is this number divisible by 3? Rule 1b (Divisibility by 4): Is the number formed by the last two digits of the original number (the number left after deleting the hundreds, thousands, millions etc) divisible by 4? If the answer to 1a is NO, then the number is not divisible by 3 and so not divisible by 12. In this case, obviously, rule 1b is irrelevant. If the answer to 1b is NO, then the number is not divisible by 4 and so not divisible by 12. If the answer to both 1a and 1b is YES, then the number is divisible by 12.

Numbers that are divisible by 2 through the number 12 are: 4, 6, 8, 10 and 12.

The smallest number that is divisible by all the numbers 2 through 12 is 27,720.

a number is divisible by 12 if the number is also divisible by both 3 and 7. You mean a number is divisible by 21 if it is divisible by 3 and 7.

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Absolutely - any number that is divisible by 12 - is also divisible by 6 !

A number is divisible by 12 if it is divisible by 3 AND it is divisible by 4. Rule 1a (Divisibility by 3): Add up all the digits of the number. Is this number divisible by 3? Rule 1b (Divisibility by 4): Is the number formed by the last two digits of the original number (the number left after deleting the hundreds, thousands, millions etc) divisible by 4? If the answer to 1a is NO, then the number is not divisible by 3 and so not divisible by 12. In this case, obviously, rule 1b is irrelevant. If the answer to 1b is NO, then the number is not divisible by 4 and so not divisible by 12. If the answer to both 1a and 1b is YES, then the number is divisible by 12.

If a number is divisible by both three and four, it's divisible by twelve.

No. 12 cannot be divisible by any number bigger than 12.

To be divisible by 3 and 4 the number must be divisible by 12. 201/12 = 16.75 so the smallest number in the range, divisible by 12, is 17*12 = 204 301/12 = 25.08 so the largest number in the range, divisible by 12, is 25*12 = 300 The number of multiples of 12 is 25 - 16 = 9

Yes, because 12 is divisible by 2 and 6.

Numbers that are divisible by 2 through the number 12 are: 4, 6, 8, 10 and 12.

Not always because 18 is divisible by 2 and 6 but not by 12

Multiples of 12 are even. Start with 999998. It's not divisible by 12. Try 999996. It is divisible by 12. Stop there.

The smallest number that is divisible by all the numbers 2 through 12 is 27,720.

Yes.

Not always because 30 is divisible by 2 and 6 but not by 12