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If \(X\) is an integer, does \(7^X+9^{X+3}\) end with a \(0?\)
1) \(2^X\) is odd.
2) \(2X+2\) is even.
Answer: A
Source: e-GMAT
1) \(2^X\) is odd.
2) \(2X+2\) is even.
Answer: A
Source: e-GMAT
