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The probability that A speaks truth is 4...

The probability that A speaks truth is 4/5 , while this probability for B is 3/4 . The probability that they contradict each other when asked to speak on a fact is

A

`(3)/(20)`

B

`(4)/(5)`

C

`(7)/(20)`

D

`(1)/(5)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PROBABILITY-Exercise-II
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  10. Three persons A,B,C in order cut a pack of cards replacing them after ...

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  11. In the above problem the ratio of the probabilities of their winning i...

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  12. A man alternately tosses a coin and throws a die continuously . The pr...

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  13. A biased coin with probability p, 0 lt p lt 1 of heads is tossed until...

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  14. On a toss of two dice, A throws a total of 5. Then the probability tha...

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  15. A and B throw a pair of dice. A wins if the throws 6 before B throws 7...

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