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Last updated at Aug. 27, 2021 by Teachoo

Transcript

Ex 1.2, 1 Which of the following are examples of the null set (iii) {x: x is a natural numbers, x < 5 and x > 7 } Natural numbers = 1, 2, 3, 4, 5, 6,… Natural numbers less than 5 (x < 5) = 1, 2, 3, 4 Natural numbers greater than 7 (x > 7) = 8, 9, 10, 11,…. A number cannot be simultaneously less than 5 and greater than 7. Therefore no elements in this set. ∴ It is a null set Null set (∅) : Which has no elements

Ex 1.2

Ex 1.2, 1 (i)
Important

Ex 1.2, 1 (ii)

Ex 1.2, 1 (iii) You are here

Ex 1.2, 1 (iv)

Ex 1.2, 2 (i)

Ex 1.2, 2 (ii)

Ex 1.2, 2 (iii) Important

Ex 1.2, 2 (iv) Important

Ex 1.2, 2 (v)

Ex 1.2, 3 (i)

Ex 1.2, 3 (ii)

Ex 1.2, 3 (iii)

Ex 1.2, 3 (iv) Important

Ex 1.2, 3 (v) Important

Ex 1.2, 4 (i)

Ex 1.2, 4 (ii)

Ex 1.2, 4 (iii) Important

Ex 1.2, 4 (iv) Important

Ex 1.2, 5 (i)

Ex 1.2, 5 (ii)

Ex 1.2, 6 Important

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.