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Ex 13.2, 5 A die marked 1, 2, 3 in red and 4, 5, 6 in green is tossed. Let A be the event, ‘the number is even,’ and B be the event, ‘the number is red’. Are A and B independent?Here, S = {"1, 2, 3" ," 4, 5, 6" } Let two events be A : the Number is even B : the number is red Event A A = {"2, 4, 6" } P(A) = 3/6=1/2 Event A A = {"2, 4, 6" } P(A) = 3/6=1/2 Also, A ∩ B = {2} So, P(A ∩ B) = 1/6 Now, P(A) . P(B) = 1/2 ×1/2 = 1/4 ≠ P(A ∩ B) Since P(A ∩ B) ≠ P(A) . P(B) Therefore, A and B are not Independent

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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 14 years. He provides courses for Maths, Science and Computer Science at Teachoo