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The last two digits (the tens and units) are divisible by 4.
This is equivalent to the following two conditions:
- If the tens digit is even, the units digit must be 0, 4 or 8
- If the tens digit is odd, the units digit must be 2 or 6
For divisibility by 9, calculate the digital root: this is the sum of all the digits in the number. Repeat with the digits of this number - and keep repeating until you are down to a single digit. It that is 9, then the number is divisible by 9 and if not, it is not.
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What divisibility rules were combined to make the divisibility rule of 36?
You have to use the rules of 4 and 9 Using the rules of 2 and 18 won't work because the smallest common multiple of 2 and 18 is 18 not 36. 3 and 12 won't work either because the smallest common multiple of 3 and 12 is 12 not 36. However 4 and 9 does work because their biggest common divisor is 1 so multiplying them works. The biggest common divisor of 2 and 18 is 2 and the biggest common divisor of 3 and 12 is 3
What are the divisibility rules of factor 855?
1 3 9 19 57 95 171 285 855
What are the divisibility rules from 1-25?
26
Can you tell if whether 432 is divisible by 2 3 4 5 6 9 10?
Yes, you can tell using the divisibility rules. The answers are yes for all but 5 and 10.
What are the 2-10 divisibility rules?
12
