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A box contains 10red marbles, 20 blue ma...

A box contains 10red marbles, 20 blue marbles and 30 green marbles. 5 marbles are drawn at random. From the box, what is the probability that i. all are blue? ii. at least one is green?

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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. In  a lottery, a person chooses six different numbers at random fro...

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  2. Two dice are thrown. Find the odds in favour of getting the sum i. 4...

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  3. A box contains 10red marbles, 20 blue marbles and 30 green marbles....

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  4. What are the odds is favour of getting a spade if a card is drAwn f...

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  5. Five cards are drawn from a well shuffled pack of 52 cards. Find th...

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  6. A bag contains tickets numbered from 1 to 20. Two tickets are drawn...

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  7. An urn contains 7 white, 5 black and 3 red balls. Two balls are dra...

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  8. The probability that at least one of the event A and B occurs is 0....

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  9. Check whether the following probabilities P(A)a n d\ P(B) are consi...

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  10. Check whether the following probabilities P(A)a n d\ P(B) are consi...

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  11. Events E and F are such that P("not E or not F")=0. 25 State whether...

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  12. The probability of two events A and B are 0.25 and 0.50 respectivel...

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  13. If a die is rolled twice, find the probability of getting of getting a...

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  14. A die is thrown twice. What is the probability that at least one of...

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  15. A drawer contains 50 bolts and 150 nuts. Half of the bolts and half...

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  16. In an essay competition, the odds in favour of competitors P, Q, R ...

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  17. Two dice are thrown together. What is the probability that the sum o...

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  18. Two dice are thrown together .What is the probability that the sum of ...

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  19. The probability that a person will get an electric contract is 2/5 ...

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  20. The probability that a student will receive A, B, C or D grade or 0....

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