Lessons

General Aptitude
12.1 Surds and Indices - General Questions

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Q.

Given that 100.48 = x, 100.70 = y and xz = y2, then the value of z is close to:

View Answer

Correct choice: C

Explanation:

xz = y2    ⇔    10(0.48z) = 10(2 x 0.70) = 101.40

⇒ 0.48z = 1.40

z = 140 = 35 = 2.9 (approx.)
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