1.

If 27x-7 = 1 then x = ..................A) 1 B) 2 C) 0 D) 3

Answer»

Correct option is (A) 1

\(2^{7x-7}\) = 1 \(=2^0\)

\(\Rightarrow\) 7x - 7 = 0

\(\Rightarrow\) \(x=\frac77=1\)

Correct option is    A) 1

If x value will 1
then;
2^7*1-7
=2^7-7
=2^0
( in exponent x^0=1)
the correct option is A 


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