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In a class , 40% students study History,...

In a class , 40% students study History, 25% Civics and 15% both History and Civics. A student from the class is selected at random . The probability that he studies history, if it is known that he studies civics is

A

`3//8`

B

`1//8`

C

`3//5`

D

`2//5`

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The correct Answer is:
C
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1C
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  5. One ticket is selected at random from 50 tickets numbered 00, 01, 02, ...

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  6. A box contains 10 mangoes out of which 4 are spoiled. 2 mangoes are ta...

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  9. If P(A) = 0.4, P(AcupB) =0.8 and A,B are independent then P(B)=

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  10. If A and B are two independent events such that P(B) = 2/7, P(AcupB)=0...

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  13. If E(1), E(2) are independent events in a random experiment with P(E(1...

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  14. If E(1), E(2), are independent events, such that P(E(1) cap E(2)) = 1...

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  15. If E(1), E(2), are independent events, such P(E(1) cap E(2))= 1//8, P...

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  17. Let A and B be two events such that P(overline("A cap B")) = 1//6, P(A...

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  18. If A and B are events such that P(AcupB)=(5)/(6),Pbar((A))=(1)/(4)and...

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