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Earn +20 ptsQ: Is 21 divisible by 9
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Is 9 and 21 relatively prime?
no both are divisible by 3
Is 105 divisible by 9?
no. if you divided it by nine you would get a number with a big decimal. But is divisible by 5. (105/5=21)
Why is 63 divisible by 3 and 7?
3*21 = 63 so 63 is divisible by 3 7*9 = 63 so 63 is divisible by 7.
Is 21837 divisible by 6 and 9?
Nope - To be divisible by nine, the sum of the digits must also be divisible by 9 (the digits total 21). Additionally, since it's an odd number - it cannot be divided by 6 !
Why is 126 divisible?
126 is divisible by 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126.
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