1.

57-x = 5° then x = ………………. A) 13 B) 7 C) 3 D) 4

Answer»

Correct option is (B) 7

\(5^{7-x}=5^0\)

\(\Rightarrow\) 7 - x = 0

\(\Rightarrow\) x = 7

Correct option is  B) 7



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