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A bag X contains 2 white and 3 black bal...

A bag X contains 2 white and 3 black balls and another bag Y contains 4 white and 2 black balls. One bag is selected at random and a ball is drawn from it. The, the probability chosen to be white is a. `2//15` b. `7//15` c. `8//15` d. `14//15`

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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. If A and B are two events, then P( A nnB)=?? a.) P( A )P( B ) b.) ...

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  2. If P(AuuB)=0. 8\ a n d\ P(AnnB)=0. 3 ,\ t h e n\ P( A )+P( B )= a. ...

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  3. A bag X contains 2 white and 3 black balls and another bag Y contains ...

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  4. Two persons A and B take turns in throwing a pair of dice. The first ...

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  5. The probability that in a year of 22nd centurychosen at random, there ...

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  6. From a set of 100 cards numbered 1 to 100, one card is drawn at random...

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  7. If A and B are two events such that P(A)=4/5, a n d\ P(AnnB)=7/(10), t...

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  8. If A and B are two events associated to a random experiment such that ...

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  9. If P(A)=3//10 , P(B=2//5) and P(AuuB)=3//5 then P(A//B)+P(B//A) equals...

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  10. Let P(A)=7/(13), P(B)=9/(13) and P(AnnB)=4/(13) . Then P( A //B)= 5/...

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  11. If P(A)=2/5,P(B)=3/10andP(AcapB)=1/5 then P(A'/B')cdotP(B'/A') is equa...

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  12. If A and B are two events such that P(A)=1/2, P(B)=1/3,\ P(A//B)=1/4, ...

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  13. Let A and B be two events such tat P(A)=3/8,\ P(B)=5/8a n d\ P(AuuB)=3...

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  14. If P(B)=3/5, p(A//B)=1/2 and P(AuuB)=4/5, t h e n\ P(B//A)= 1/5 b. 3/...

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  15. If A and B are two events such that P(A)=0. 4 ,\ P(B)=03\ a n d\ P(Auu...

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  16. If A and B are two events such that A!=varphi,\ B=varphi, then a.P(A//...

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  17. If the events A and B are independent then P(AnnB) is equal to :: a.P...

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  18. If A and B are two independent events with P(A)=3/5a n d\ P(B)=4/9, t ...

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  19. If A and B are two independent events such that P(A)=0. 3 ,\ P(AuuB)=0...

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  20. A flash light has 8 batteries out of which 3 are dead. If two batterie...

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