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In a box, there are 28 marbles of which ...

In a box, there are 28 marbles of which x are green and the rest are white. If the probability of getting a green marble is `2/7`. Then number of green marbles=…….

A

8

B

9

C

10

D

13

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BEYOND PUBLICATION-PROBABILITY-EXERCISE
  1. Probability of an event lies between ……….and…………..

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  2. P (E ) +P ( E )=…….

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  3. In a box, there are 28 marbles of which x are green and the rest are w...

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  4. IF E is an event whose probability is 2/5, then the probability of not...

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  5. IF two dice are rolled simultaneously then the 'sum' with greatest pos...

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  6. The probability of raining a day is ………….

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  7. IF one side is chosen at random from the sides of a right triangle, th...

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  8. When a dice is thrown, the probability of getting neither a prime nor ...

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  9. Getting a tail or head…………

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  10. Getting a prime or composite number is a …………….event.

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  11. Getting a red card (or) black card is……..

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  12. P (sure events)=…………..

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  13. P ( Impossible events)=………….

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  14. The probability of a face card from red cards is……….

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  15. The probability of drawing a black king from the deck is………….

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  16. The probability of drawing a black card from the black cards is…………

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  17. The probability of getting two tails when two coins are tossed is………….

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  18. There are………. Cards in a pack of playing cards.

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  19. IF P ( E ) =0.05, then P (overlineE)=………

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  20. P ( G )=4/17, P (overlineG)=………..

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