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A bag contains 5 white, 7 red and 4 black balls. If four balls are drawn one by one with replacement, what is the probability that none is white?

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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. For a loaded die, the probabilities of outcomes are given as under: P(...

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  2. A and B are two candidates seeking admission in a college. The probabi...

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  3. A bag contains 5 white, 7 red and 4 black balls. If four balls are ...

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  4. If P(A)=0. 4 ,P(B)=p ,P(AuuB)=0. 6 and if A and B are given to be inde...

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  5. Let A and B be two independent events. The probability of their sim...

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  6. A class consists of 80 students, 25 of them are girls and 55 are boys....

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  7. Two dice are thrown. Find the probability of getting an odd number on ...

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  8. A scientist has to make a decision on each of the two independent even...

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  9. In two successive throws of a pair of dice, determine the probability ...

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  10. A, B and C shot to hit a target. If A hits the target 4 times in 5 ...

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  11. A company has estimated that the probabilities of success fro there pr...

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  12. A can solve 90% of the problems given in a book and B can solve 70%. ...

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  13. A bag contains 5 white, 7 red and 8 black balls. Four balls are drawn ...

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  14. If two switches S1a n dS2 have respectively 90% and 80% chances of wor...

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  15. The machine operates if all of its three components function. The prob...

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  16. An anti aircraft gun take four shots at an enemy plane moving away fro...

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  17. An article manufactured by a company consists of two parts X and Y. In...

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  18. To test the quality of electric bulbs produced in as factory, two bulb...

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  19. A bag contains n white and n red balls. Pairs of balls are drawn witho...

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  20. If Aa n dB are two events such that P(A)=0. 5 ,P(B)=0. 6a n dP(AuuB)=0...

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