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There are 7 red, 5 black and 3 white bal...

There are 7 red, 5 black and 3 white balls in a bag. A ball is drawn at random. Find the probability that ball drawn is:
(i) white
(ii) not white
(iii) either red or white.

Text Solution

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The correct Answer is:
(i) `1/5` (ii) `4/5` (iii) `2/3`
N/a
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NAGEEN PRAKASHAN-PROBABILITY-EXERCISE
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  2. There are two children in a family. Find the probability that at most ...

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  3. There are 7 red, 5 black and 3 white balls in a bag. A ball is drawn a...

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  4. There are 12 tickets numbered 1 to 12. A ticket is drawn at random. Fi...

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  5. The probability of the occurrence of an event is 3/8. Find the probabi...

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  6. The probability of non-occurrence of an event is 5/12. Find the probab...

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  7. The odds in favour of an event are 3:4. Find the probability of the no...

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  8. The odds against of an event 5:3. Find the probability of the occurren...

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  9. There are 15 prizes and 25 blaks in a lottery. Find the probability of...

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  10. Two dice are thrown. Find the odds in favour of getting the sum i. ...

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  11. Two letters are drawn from the english alphabets. Find the probabil...

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  12. A and B are two events such that P(A)=0.5, P(B)=0.4 and (A "or"B)=0.6,...

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  13. A and B are two events such that P(A)=0.60, P(A"or"B)=0.85 and P (A an...

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  14. (i) A and B are two events in a random experiment such that P(AuuB)=0....

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  15. For two mutually exclusive events A and B , P(A)=1/3 and P(B)=1/4, fi...

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  16. A, B, C are three mutually exclusive and exhaustive events associated ...

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  17. A number is selected at random from first 200 natural numbers. Find th...

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  18. A card is drawn at random from a well shuffled pack of 52 cards. Find ...

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  19. A card is drawn at random from a well shuffled pack of 52 cards. Find ...

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  20. Two cards are drawn at random from a well shuffled pack of 52 cards. F...

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