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A speaks the truth in 75% of the cases ,...

A speaks the truth in 75% of the cases , B in 80% cases. What is the probability that their statements about an incident do not match ?

A

`7/(20)`

B

`3/(20)`

C

`2/7`

D

`5/7`

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-PROBABILITY-EXERCISE-1C
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  2. A speaks truth in 80% of the cases and B in 60% of the cases. The perc...

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  7. Two persons A and B toss a die. The person who first throws 6 first th...

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  8. Two persons A and B are rolling die on the condition that the person w...

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  9. Three persons A, B ,C in order toss a die. The person who first throws...

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  10. A,B,C are tossing a coin on the condition that , the person who gets a...

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  11. The person, A in order toss a die. The person who throws 5 or 6 wins. ...

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  12. 2 white balls and 3 blanks balls and 3 blank balls are placed in a bag...

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  13. Three white balls and five blacks balls are placed in a bag and three ...

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  14. A bag contains 6 white and 4 black balls. Two ball are drawn at rando...

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  15. A fair die is thrown until a score of less than five points is obtaine...

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  16. A man throws a die until he gets a number bigger than 3. The probabili...

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

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

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  19. A die is rolled three times, the probability of getting a larger numbe...

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  20. A man alternately tosses a coin and throws a die beginning with the co...

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