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The probability that a student securing ...

The probability that a student securing first division ia an examination is `1/10`. What is the probability that out of 100 students twenty pass in first division ?

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The correct Answer is:
`100_(C_(20))(1/10)^(20)(9/10)^(80)`
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ARIHANT PUBLICATION-PROBABILITY-ODISHA BUREAU.S TEXT BOOK SOLUTIONS (EXERCISE 6(D))
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  13. Four cards are drawn successively with replacement from a well-shuffle...

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  14. Four cards are drawn successively with replacement from a well-shuffle...

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  15. In an examination there are twenty multiple choice question each of wh...

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  16. A bag contains 7 balls of different colours. If five balls are drawn s...

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  17. Find the probability of throwing at teast 3 sixes in 5 throws of a dia...

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  20. If a random variable X has a binomial distribution B (8,1/2) then find...

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