CAT 2021 Surds and Indices Question (Medium)

Question

The value is 51 4 125 0.25

Optima Learn · Accepted Answer

Understanding The expression to evaluate is 5 1 4 125 0.25 . Analyzing Since 125 5 , we can rewrite 125 0.25 as 5 0.25 5 3 4 . The expression becomes 5 1 4 5 3 4 5 1 4 3 4 5 1 5. Evaluating the Options b 25 would result from squaring 5, not from this exponent addition. c 50 and d 10 don t correspond

CAT 2021 Surds and Indices — Previous Year Question

CAT 2021

Quantitative

Surds and Indices

Medium

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