Q2 of 249 Page 31

If A and B are events such that P (A) =0.6, P (B) = 0.3 and P (A ∩ B) = 0.2, find P (A/B) and P(B/A).

We have, =


And =


And also P (A ∩ B) = P (B ∩ A)


Hence = (answer)


And (answer)


More from this chapter

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14

A bag contains 4 white, 7 black 5 red balls. Three balls are drawn one after the other without replacement. Find the probability that the balls drawn are white, black and red respectively.

 1

If P (A) = 7/13, P (B) =9/13 and P (A ∩ B) = 4/13, find p (A/B).

 3

If A and B are two events such that P (A ∩ B) = 0.32 and P (B) = 0.5, find P (A/B).

 4

If P (A) = 0.4, P (B) = 0.8, P (B/A) = 0.6. Find P (A/B) and P (A ∪ B).