It is divisible by any of its factors which are: 1, 3, 31 and 93
If the rules for 2 and 3 work, the number is divisibale by 5.
3 - 31
It is divisible by any of its factors which are: 1, 3, 31 and 93
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
It is divisible by any of its factors which are: 1, 3, 31 and 93
If the rules for 2 and 3 work, the number is divisibale by 5.
The divisibility rules for a prime number is if it is ONLY divisible by 1, and itself.
3 - 31
It is divisible by any of its factors which are: 1, 3, 31 and 93
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
12
You can always check on the divisibility of a number by dividing it into another number. But if you know the divisibility rules, you can get that information easier and faster.
By tautology. If it did not work, it would not be a divisibility rule!
i think divisibility rules help with fractions because it helps you reduce the fraction to make i a simple fraction.
Three
3 and 9. And they divide into 123456789 whether or not you use divisibility rules!