Question Bank • QB_GA_083 NAT • 1 Mark

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

Calculate the value of $x$ satisfying the equation $2^{2x - 1} = 128$.

Answer Key:

4

Step-by-Step Solution & Explanation

$128 = 2^7$ $2^{2x - 1} = 2^7$ $2x - 1 = 7 \implies 2x = 8 \implies x = 4.0$
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