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Bunuel
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Great question.

y=7x+5 for some integer x

As y is not divisible by 7 => It can never be divisible by 14

SMASH THAT E.
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Bunuel
If x is an integer and y = 7x + 5, which of the following CANNOT be a divisor of y?

A. 10
B. 11
C. 12
D. 13
E. 14

Since y is 5 more than a multiple of 7, we see that y will NEVER be a multiple of 7. If y is not a multiple of 7, it can’t be a multiple of 14, either. Thus, 14 cannot be a divisor of y.

Answer: E
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Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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