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If \(x\) and \(y\) are positive integers and \(n = 5^x + 7^{y + 3},\) what is the units digit of \(n?\)
(1) \(y = 2x - 16\)
(2) \(y\) is divisible by \(4.\)
Answer: B
Source: Manhattan GMAT
(1) \(y = 2x - 16\)
(2) \(y\) is divisible by \(4.\)
Answer: B
Source: Manhattan GMAT
