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### Question

If $p^q = 36$, then what could be $(p - 1)^(q + 1)$?

**A**

125.

**B**

126.

**C**

124.

**D**

127.

**Soln.**

**Ans: a**

By inspection we can see that p = 6, q= 2. So $(6 - 1)^(2 + 1)$ will be $5^3$, i.e., 125.