If you take a number, e.g. 141, and add up all its digits, you can find out if it's divisible by three.
So: 1+4+1 = 6
6 is a multiple of three, so 141 is also a multiple of three.
No.
no
NO.
No
No.
Yes
3333
It is divisible by 3
Yes
No, but 951 is.
2 & 3
It is divisible by 3.