Question

Using divisibility tests, determine which of the following numbers are divisible by 3: a) 329724 b) 897503

Answer 1

Answer:

329724 is divisible by 3

Step-by-step explanation:

to  check divisibility by 3, add  all digits and check whether sum is divisible by 3 or not

for 329724

3+2+9+7+2+4 = 45 = 4+5 =9 , is divisible by 3

therefore 329724 is divisible by 3

for 897503

8+9+7+5+0+3 = 32 , is not divisible by 3

897503 is not divisible by 3