Example 2 - Chapter 1 Class 11 Sets

Last updated at August 2, 2026 by

Example 2 - Write {x : x is a positive integer and x2 < 40}

Example 2 - Chapter 1 Class 11 Sets - Part 2

Take a fresh quiz. Then take another.
Every attempt is a new AI-adaptive Teachoo quiz with 5 questions, selected from your answers, mistakes, and progress.
Remove Ads

Transcript

Example 2 Write the set {x : x is a positive integer and x2 < 40} in the roster form. Positive integer = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10…. 12 = 1 22 = 4 32 = 9 42 = 16 52 = 25 62 = 36 72 = 49 The required numbers are 1, 2, 3, 4, 5, 6. So, the given set in the roster form is {1, 2, 3, 4, 5, 6}.

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.