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A pack of cards contains 4 aces, 4 kings...

A pack of cards contains 4 aces, 4 kings, 4 queens and 4 jacks. Two cards are drawn at random. the probability that at least one of them is an ace is a. 1/5            b. 3/16            c. 9/20          d. 1/9

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RD SHARMA ENGLISH-PROBABILITY-All Questions
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  3. A pack of cards contains 4 aces, 4 kings, 4 queens and 4 jacks. Two ...

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  4. If three dice are throw simultaneously, then the probability of get...

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  5. One of the two events must occur. If the chance of one is 2/3 of th...

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  6. Find the probability that a leap year will have 53 Friday or 53 Sat...

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  8. A and B are two events such that P(A)=0. 25\ a n d\ P(B)=0. 50. The ...

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  9. If the probability of A failing in an examination is 1/5 and that of B...

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  10. A box contains 10 good articles and 6 defective articles. One item ...

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  11. Three integers are chosen at random from the first 20 integers. The ...

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  12. Out of 30 consecutive integers, 2 are chosen at random. the probabi...

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  13. A bag contains 5 black balls, 4 white balls and 3 red balls. If a ba...

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  14. Two dice are thrown simultaneously. the probability of getting a pa...

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  15. An urn contains 9 balls two of which are rd, three blue and four bl...

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  16. Five persons entered the lift cabin on the ground floor of an 8 flo...

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  17. A box contains 10 good articles and 6 defective articles. One item ...

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  18. A box contains 6 nails and 10 nuts. Half of the nails and half of th...

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  19. If S is a sample space, then P(A) =1/3P(B) and S=A uu B where A and ...

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  20. A mapping is select at random from the set of all the mappings of t...

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