1. Add every other digit in the entire number.
Ex. 437893
4+7+9=20
3+8+3=14
2. Add those two sums together.
20+14=34
3. Since thirty four isn't divisible by 11, neither is the whole number.
Hope this helps!
Chat with our AI personalities
If the rules for 2 and 3 work, the number is divisibale by 5.
add all the digits together and see if it is divisible by nine.
2.50
There is no divisibility rule for 13 because it is a prime number. If you are thinking: why is there a divsibility rule for 2 and 3 then. Well, i don't know so go look it up on google.
3 - 31