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Ex 1.2, 4 - State whether A = B or not (i) A = {a, b, c, d}

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Ex 1.2, 4 In the following, state whether A = B or not: (i) A = {a, b, c, d}; B = {d, c, b, a} Element of Set A = a, b, c, d Element of Set B = a, b, c, d Each element of A is the same as each element of B, ∴ A = B Ex 1.2, 4 In the following, state whether A = B or not: (iv) A = {x: x is a multiple of 10}; B = {10, 15, 20, 25, 30 ...} B = {10, 15, 20, 25, 30 …} A = {x: x is a multiple of 10} Multiple of 10 are 10 x (1,2,3,4,…) = 10, 20, 30, 40, 50… A = {10, 20, 30, 40, 50,…} Element of Set A = 10, 20, 30, 40,… Element of Set B = 10, 15 , 20, 25, … Here, 15 is in set B but not in set A i.e. 15 ∈ B but 15 ∉ A. ∴ A ≠ B

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.