Numerical: surds MCQ — 1 Practice Questions with Answers

Numerical: surds is a Reasoning & Mental Ability topic in the RAS/RPSC syllabus. This page gathers exam-style Numerical: surds multiple-choice questions with correct answers and explanations, so aspirants can test recall and revise frequently examined concepts.

Practice 1 Numerical: surds multiple-choice questions with detailed answers and explanations. Ideal for RAS/RPSC exam preparation.

1 Questions Reasoning & Mental Ability

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Q1. If √80 + 6√5 = 22.35, what will be the value of 3√5 + √125?

A 16

B 17.88 Correct

C 22.88

D 25.88

Explanation

√80 is equal to 4√5, so the given expression becomes 4√5 + 6√5 = 10√5. Since 10√5 = 22.35, the value of √5 is 2.235. Now √125 is equal to 5√5. Therefore, 3√5 + √125 becomes 3√5 + 5√5 = 8√5. Multiplying 8 by 2.235 gives 17.88. The values 16, 22.88 and 25.88 do not follow from the given relation, because they would require a different value of √5.

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Numerical: surds falls under the Reasoning & Mental Ability section of the RAS/RPSC syllabus. It is a frequently tested area and regular practice with these MCQs will strengthen your preparation.

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