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Answers
A
B
C
D
E
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Difficulty—
\(x\) is an integer and \(x\) raised to any odd integer is greater than zero; is \(w - z\) greater than \(5\) times the quantity \(7^{x-1}-5^x\)?
1) \(z < 25\) and \(w=7^x\)
2) \(x = 4\)
The OA is A
Source: Official Guide
1) \(z < 25\) and \(w=7^x\)
2) \(x = 4\)
The OA is A
Source: Official Guide
