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If x is a sum of all even integers on the interval 13...65 and y is their number, what is the GCD (x, y)?

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by BTGmoderatorLU » Wed Jul 21, 2021 9:55 am

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Source: Princeton Review

If x is a sum of all even integers on the interval 13...65 and y is their number, what is the GCD (x, y)?

A. 1
B. 13
C. 26
D. 52
E. 1014

The OA is C
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