What is the divisibility rule for 10?

Answer 1

If the number's last digit is 0, then it is divisible by 10.

e.g. 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 and so on are all divisible by ten.

but... 45 is not divisible by ten because the last digit is not zero.