Allied & ICAR Exam Bank • ALLIED_2179 NAT • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

If $\log_2(x - 1) + \log_2(x + 1) = 3$, the positive value of $x$ is:

Answer Key:

3

Step-by-Step Solution & Explanation

$\log_2(x^2 - 1) = 3 \implies x^2 - 1 = 2^3 = 8 \implies x^2 = 9 \implies x = 3$.
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