Last updated at June 13, 2018 by Teachoo

Transcript

Ex 3.2, 8 Which of the following numbers are prime? (a) 23Factors of 23 1 × 23 = 23 23 × 1 = 23 It has only 2 factors 1 and 23 So it is Prime Number Ex 3.2, 8 Which of the following numbers are prime? (b) 51Factors of 51 1 × 51 = 51 3 × 17 = 51 17 × 3 = 51 So Factors are 1, 3, 17, 51 It has more than 2 factors So it is not a prime number Ex 3.2, 8 Which of the following numbers are prime? (c) 37Factors of 37 1 × 37 = 37 37 × 1 = 37 It has only 2 factors 1 and 37 So it is a Prime number Ex 3.2, 8 Which of the following numbers are prime? (d) 26Factors of 26 1 × 26 = 26 2 × 13 = 26 13 × 2 = 26 So factors are 1, 2, 13, 26 It has more than 2 factors So it is not a Prime number

Ex 3.2

Ex 3.2, 1

Ex 3.2, 2 (a) Important

Ex 3.2, 2 (b)

Ex 3.2, 2 (c)

Ex 3.2, 2 (d)

Ex 3.2, 2 (e)

Ex 3.2, 2 (f)

Ex 3.2, 2 (g)

Ex 3.2, 2 (h)

Ex 3.2, 2 (i)

Ex 3.2, 3

Ex 3.2, 4

Ex 3.2, 5

Ex 3.2, 6 (a)

Ex 3.2, 6 (b)

Ex 3.2, 6 (c)

Ex 3.2, 6 (d)

Ex 3.2, 7

Ex 3.2, 8 Important You are here

Ex 3.2, 9

Ex 3.2, 10 Important

Ex 3.2, 11

Ex 3.2, 12 Important

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.