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Find an irrational number between 3 and √15. - Mathematics

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Question

Find an irrational number between 3 and `sqrt(15)`.

Sum
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Solution

Given: We are asked to find how `sqrt(10)` is an irrational number between 3 and `sqrt(15)`.

Stepwise calculation:

1. Check the approximate values:

3 = 3.000

`sqrt(10) ≈ 3.162`

`sqrt(15) ≈ 3.873`

2. Since `3 < sqrt(10) < sqrt(15), sqrt(10)` lies strictly between 3 and `sqrt(15)`.

3. `sqrt(10)` is irrational because 10 is not a perfect square.

Therefore, `sqrt(10)` is an irrational number between 3 and `sqrt(15)`.

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Chapter 1: Rational and Irrational Numbers - Exercise 1C [Page 24]

APPEARS IN

Nootan Mathematics [English] Class 9 ICSE
Chapter 1 Rational and Irrational Numbers
Exercise 1C | Q 13. | Page 24
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