If a² = 23/25, then a is

(a) rational   (b) irrational

(c) whole number   (d) integer

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  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

Transcript

Question 11 If a² = 23/25, then a is (a) rational (b) irrational (c) whole number (d) integer Given a² = 23/25 Taking square root a = ± √(23/25) a = ± √23/√25 a = ± √23/5 Since √𝟐𝟑 is irrational ∴ a = ± √23/5 is also irrational So, the correct answer is (b)

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.