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Q: Divisibility rule -divisible by 12

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

the divisibility rule for 2 is: The number is even;the last digit ends with a 2,4,6,8,10, etc.The divisibility rule fir 3 is: The sum of the number is divisible by 3The divisibility rule for 4 is: The last two digits are divisible by 4The divisibility rule for 5 is: The number ends with a 5 or 0The divisibility rule for 6 is: The sum CAN be divisible by 2 and or 3The divisibility rule for 9 is: The sum of the number is divisible by 9The divisibility rule for 10 is : The number ends with a 0

it is divisible by5

There is no easy rule for divisibility by 34.

129 is divisible by 3. 1+2+9=12 and 12 is divisible by 3. That is the rule of divisibility by 3.

it is divisible by 3 and 9

Use the divisibility rule for 10. If the number is divisible by 10, then it is obviously also divisible by 5.

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.

Rule: If it is divisible by 2 and by 3Numbers are divisible by 6 if they are divisible by 3 and 2. Therefore, for example, since 18 is divisible by 3 and 2, it is also divisible by 6.The divisibility rule for 6 is, it can go into the number if 2 and 3 can also.

The divisibility rule for 2 works because the base of our number system, 10, is divisible by 2.

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.

2 squared 1 = 4 so the divisibility rule is that it is divisible by 1, 2 and 4.

The number must be divisible by 2 and by 7.

The number must be divisible by 13 and by 11.

It is even and the sum of its digits is divisible by 9.

A number has to be even and also divisible by 3.

It is divisible by any of its factors including itself

If the number is even, it's divisible by 2.

It is divisible by any of its factors including itself

By using the divisibility rule for 3, we find that 117 is divisible by 3. That makes it composite.

if the difference of the sum at the alternate places is divisible by 11 then it is divisible by 11

A number is divisible by 15 if it is divisible by the prime factors of 15, that is, 5 and 3.

Its digital sum is 9 so it is divisible by 9

If the sum of the digits is divisible by 3, the number is also.

If a number ends in 0, it is divisible by 10.