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Two balls are drawn from an urn containi...

Two balls are drawn from an urn containing 2 white; 3 red and 4 black balls one by one without replacement. What is the probability that at least one ball is red?

A

`7/12`

B

`5/12`

C

`3/10`

D

none of these

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The correct Answer is:
A
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QUANTUM CAT-PROBABILITY-QUESTION BANK
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  2. A bag contains 3 red and 4 black balls and another bag has 4 red and 2...

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  5. An urn contains 4 white 6 black and 8 red balls. If 3 balls are drawn ...

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  6. Two numbers are selected at random from integers 1 through 9. If th...

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  7. A box contains 25 tickets, numbered 1, 2, 3, .. 25. A ticket is drawn ...

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  8. A coin is tossed twice and all 4 outcomes are equally likely ....

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  9. A bag contains 10 red balls and 10 green balls , Two balls ar...

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  10. (for explantion of Baye's rule ) three boxes contain 6 red , ...

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  11. Let A and B be independent events such that P(A) =0.6 and P(B ) =0...

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  12. Let A and B be independent events such that P(A)=0.6 and P(B)=0.5 find...

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  13. Let A and B be independent events such that P(A)=0.6 and P(B)=0.6 find...

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  14. Let A and B be independent events such that P(A)=0.6 and P(B)=0.7 find...

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  15. If A and B are independent events such that P(A)=0.4 and P(B)=0.5, the...

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  16. IF A and B are two indepenent events such that P( barA ) = 0....

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  17. An unbiased die is tossed twice. Find the probability of getting a 1, ...

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  18. Two persons A and B throw a die alternately till one of them gets a ...

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  19. Two persons A and B throw a coin alternatively till one of them gets h...

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  20. A and B throw a die alternatively till one of them gets a 6 and win...

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