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Q: What is the real divisibility rule for 9?

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The divisibility rules of 4 and 9 are combined to make the divisibility rule of 36.

it is divisible by 3 and 9

It is 3 6 9

18

Its digital sum is 9 so it is divisible by 9

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

If the digit sum of a number adds up to 9 then it is divisible by 9.

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

There is no easy rule for divisibility by 34.

By tautology. If it did not work, it would not be a divisibility rule!

why does the divisibility rule work for 4

9 because the digits of 36 add up to 9

Its digits add up to 9 so therefore it is divisible by 9

there is a divisibility for 24 the rule is you can divide 24 as 6 and 4 i think

What is the divisblity rule by 8

Because the final digital sum is 9 then it is divisible by 9 as follows 1827/9 = 203

If all the digits add up to 9 then it is divisable by 9

add all the digits together and see if it is divisible by nine.

There is no rule for 7 :P

Any real number can be divided by any other real number, other than zero, and the result will be a real number. Perhaps the only rule is, don't divide by zero.

Able to Be Divided

2.50

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

the number is even.