Question

test the dividbilty of the following numbers by 3 : 73101 example.
Answer me fast it's argent .​

Answer 1

if the addition of each digit is divisible by 3 , then the given no. is also divisible by 3 .

7+3+1+0+1 = 12

12 is divisible by 3

therefore 73101 is also divisible by 3