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If every fourth customer gets stickers and every tenth customer gets a notebook, which customer will get both?

User Misantorp
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1 Answer

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The 20th costumer will get both.
You have to fine the least common multiple of both numbers. So the closest those two numbers have is 20.

4 * 5 = 20 \\ 10 * 2 = 20
User Heiglandreas
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