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