Ex 1.1
Ex 1.1, 1 (ii)
Ex 1.1, 1 (iii) Important
Ex 1.1, 1 (iv)
Ex 1.1, 1 (v)
Ex 1.1, 2
Ex 1.1, 3
Ex 1.1, 4
Ex 1.1, 5 Important
Ex 1.1, 6
Ex 1.1, 7
Ex 1.1, 8
Ex 1.1, 9 (i)
Ex 1.1, 9 (ii)
Ex 1.1, 10 (i)
Ex 1.1, 10 (ii)
Ex 1.1, 10 (iii) Important
Ex 1.1, 10 (iv)
Ex 1.1, 10 (v) You are here
Ex 1.1, 11
Ex 1.1, 12 Important
Ex 1.1, 13
Ex 1.1, 14
Ex 1.1, 15 (MCQ) Important
Ex 1.1, 16 (MCQ)
Last updated at May 26, 2023 by Teachoo
Since NCERT Books are changed, we are still changing the name of content in images and videos. It would take some time.
But, we assure you that the question is what you are searching for, and the content is the best -Teachoo Promise. If you have any feedback, please contact us.
Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Ex 1.1, 10 Given an example of a relation. Which is (v) Symmetric and transitive but not reflexive. Let A = {1, 2, 3}. Let relation R on set A be Let R = {(1, 2), (2, 1), (1, 3), (3, 1), (2, 3), (3, 2)} Check Reflexive If the relation is reflexive, then (a, a) R for every a {1,2,3} Since (1, 1), (2, 2), (3, 3) R R is not reflexive Check Symmetric Since (1, 2) R , (2, 1) R & (1, 3) R , (3, 1) R & (2, 3) R , (3, 2) R So, If (a, b) R, then (b, a) R R is symmetric. Check transitive Since (1, 2) R , (2, 3) R & (1, 3) R & (2, 1) R , (1, 3) R & (2, 3) R & (3, 1) R , (1, 2) R & (3, 2) R So, If (a, b) R , (b, c) R , then (a, c) R R is transitive. Hence, relation R is symmetric and transitive but not reflexive
