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Last updated at Sept. 3, 2021 by Teachoo

Transcript

Ex 1.1, 3 Write the following sets in roster form: (iv) D = {x: x is a prime number which is divisor of 60} Hence, the elements of the set are 2, 3, 5 Hence D = {2, 3, 5} Prime Number Those number which are divisible by 1 and number itself. Eg: 3 is a prime number, 3/1 = 3 , 3/3 = 1 Prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 21, 23… Divisor of 60 60 = 1 × 60 60 = 2 × 30 60 = 3 × 20 60 = 4 × 15 60 = 5 × 12 60 = 6 × 10 So, divisors of 60 are 1, 2, 3, 4, 5, 6, 60, 30, 20, 15, 12, 10

Ex 1.1

Ex 1.1, 1 (i)

Ex 1.1, 1 (ii)

Ex 1.1, 1 (iii) Important

Ex 1.1, 1 (iv)

Ex 1.1, 1 (v)

Ex 1.1, 1 (vi) Important

Ex 1.1, 1 (vii)

Ex 1.1, 1 (viii) Important

Ex 1.1, 1 (ix)

Ex 1.1, 2 Important

Ex 1.1, 3 (i)

Ex 1.1, 3 (ii)

Ex 1.1, 3 (iii) Important

Ex 1.1, 3 (iv) Important You are here

Ex 1.1, 3 (v)

Ex 1.1, 3 (vi)

Ex 1.1, 4 (i)

Ex 1.1, 4 (ii) Important

Ex 1.1, 4 (iii)

Ex 1.1, 4 (iv) Important

Ex 1.1, 4 (v)

Ex 1.1, 5 (i)

Ex 1.1, 5 (ii)

Ex 1.1, 5 (iii) Important

Ex 1.1, 5 (iv)

Ex 1.1, 5 (v)

Ex 1.1, 5 (vi) Important

Ex 1.1, 6

Chapter 1 Class 11 Sets (Term 1)

Serial order wise

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.