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just see if it is a multiple of 7 or u can divide the digit by 7 to get that answer and if u don't u know that it is not a multiple of 7

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Wiki User

13y ago
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Anonymous

Lvl 1
3y ago

It is easy, just do:1x72x7

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Anonymous

Lvl 1
3y ago

49

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Q: How do you know if a number is divisble by 7?
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