Ex 1.4, 5 - Chapter 1 Class 11 Sets

Transcript

Ex1.4,5 Find the intersection of each pair of sets: (i) X = {1,3,5} , Y = {1,2,3} X Y = {1,3,5} {1,2,3} = {1, 3} Ex 1.4,5 Find the intersection of each pair of sets: (ii) A = {a, e, i, o, u} B = {a, b, c} A B = {a, e, i, o, u} {a, b, c} = {a} Ex1.4, 5 Find the intersection of each of the following pairs of sets: (iii) A = {x: x is a natural number and multiple of 3} B = {x: x is a natural number less than 6} Natural number = 1,2,3,4,5,6,7,8,9,10,11, A = {x: x is a natural number and multiple of 3} Multiple of 3 = 3, 6 ,9,12,15 A = {3, 6, 9 } B = {x: x is a natural number less than 6} = {1, 2, 3, 4, 5} A B = {3, 6, 9 } {1, 2, 3, 4, 5} = {3} Ex1.4, 5 Find the intersection of each of the following pairs of sets: (iv) A = {x: x is a natural number and 1 < x 6} B = {x: x is a natural number and 6 < x< 10} Natural number = 1,2,3,4,5,6,7,8,9,10,11, A = {x: x is a natural number and 1 < x 6} = {2, 3, 4, 5, 6} B = {x: x is a natural number and 6 < x< 10} = {7, 8, 9} A B = {2, 3, 4, 5, 6} {7, 8, 9} = { } = Ex 1.4,5 Find the intersection of each pair of sets: (v) A = {1, 2, 3}, B = Given A = {1, 2, 3}, and B = = {} A B = {1, 2, 3} {} = There is no common item between both sets