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Given that E and F are events such that P(E) = 0.6, P(F) = 0.3 and P(E ∩ F) = 0.2, find P (E|F) and P(F|E).

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Question

Given that E and F are events such that P(E) = 0.6, P(F) = 0.3 and P(E ∩ F) = 0.2, find P (E|F) and P(F|E).

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Solution

Given P(E) = 0.6, P(F) = 0.3 and P(E ∩ F) = 0.2

`P(E|F) = (P(E ∩ F))/(P(E)) = 0.2/0.3 = 2/3`

and `P(F|E) = (P(E ∩ F))/(P(E)) = 0.2/0.6 = 1/3`

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Chapter 13: Probability - Exercise 13.1 [Page 538]

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NCERT Mathematics Part 1 and 2 [English] Class 12
Chapter 13 Probability
Exercise 13.1 | Q 1 | Page 538

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