![Example 2 - Chapter 1 Class 11 Sets - Part 2](https://d1avenlh0i1xmr.cloudfront.net/f5120d9d-6a68-445d-b702-0a93bf7672ae/slide3.jpg)
Examples
Last updated at April 16, 2024 by Teachoo
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}.