1. Chapter 3 Class 6 Playing with Numbers
  2. Serial order wise


Ex 3.2, 3 The numbers 13 and 31 are prime numbers. Both these numbers have same digits 1 and 3. Find such pairs of prime numbers upto 100. Prime numbers are numbers which have only 2 factors - 1 and the number itself. Now, lets see a list of numbers from 1 to 100, and mark which are prime numbers. By seeing the list, the numbers which have the same digits, and are prime are 17, 71 37, 73 79, 97

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.