1.

(7-1 – 18-1 )0 = ………………… A) – 1 B) 0 C) 1 D) 7

Answer»

Correct option is (C) 1

\((7^{-1}-18^{-1})^0=1\)  \((\because a=0\,for\,a\in\mathbb{R}-\{0\})\)

Correct option is C) 1



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