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If \(x\) is a positive integer, is \(x! + x + 1\) a prime number?

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by Gmat_mission » Sun May 31, 2020 1:34 pm

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If \(x\) is a positive integer, is \(x! + x + 1\) a prime number?

(1) \(x < 10\)

(2) \(x\) is even

[spoiler]OA=E[/spoiler]

Source: Manhattan GMAT
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