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Ex 2.2, 7 Write the relation R = {(x, x3): x is a prime number less than 10} in roster form. Prime numbers = 2, 3, 5, 7, 11, 13, 17 Prime numbers less than 10 = 2, 3, 5, 7 So, value of x = 2, 3, 5, 7 Hence, R = {(2, 8), (3, 27), (5, 125), (7, 343)}

  1. Chapter 2 Class 11 Relations and Functions
  2. Serial order wise

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo