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Alice's grandmother age is a composite number between 70 and 80. This number has a factor of 11. What number is it ?

2 Answers

4 votes
The number would have to be 77 because between 70 and 80, 77 is the only number that is a product of eleven.
User Moshiur
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3 votes
the answer is 77 because the only thing in between 70 and 80 with the factor of 11 is 77
User Doyle
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