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Difficulty—
\(N\) is a two-digit number, whose tens digit is \(9.\) If the units digit of \(N^p\) and \(N^q\) are \(6\) and \(4\) respectively, find \(N.\)
(1) \(p\) is a positive even integer.
(2) \(q\) is a positive odd integer.
Answer: B
Source: e-GMAT
(1) \(p\) is a positive even integer.
(2) \(q\) is a positive odd integer.
Answer: B
Source: e-GMAT
