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How can you tell that 42 is divisible by 3

How can you tell that 42 is divisible by 3
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How can you tell that 42 is divisible by 3

User Chase Huber
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The the sum of the number's digits, 4 and 2, equal a number divisible by 3. 4 + 2 = 6 and 6 is divisible by 3 as 6/3 = 2
User Mysticalstick
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you know because when you divide 42 by 3 it would give you 14 as the answer.
User LogiStack
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