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A lot contains 15 items of which 5 are d...

A lot contains 15 items of which 5 are defective. If three items are drawn at random, find the probability that
none of the three is defective. Do this problem directly.

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The correct Answer is:
`10/15xx9/14xx8/13`
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ARIHANT PUBLICATION-PROBABILITY-ODISHA BUREAU.S TEXT BOOK SOLUTIONS (EXERCISE 6(A))
  1. Do both parts of problem 2 if 4 cards are drawn at random.

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  2. A lot contains 15 items of which 5 are defective. If three items are d...

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  3. A lot contains 15 items of which 5 are defective. If three items are d...

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  4. A pair of dice is thrown. Find the probability of getting a sum of at ...

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  5. A pair of dice is thrown. If the two numbers appearing are different ,...

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  6. A pair of dice is thrown. If the two numbers appearing are different ,...

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  7. A pair of dice is thrown. If the two numbers appearing are different ,...

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  8. In a class 30% of the student fail in Mathematics,20% of the student f...

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  9. In a class 30% of the student fail in Mathematics,20% of the student f...

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  10. In a class 30% of the student fail in Mathematics,20% of the student f...

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  11. If A,B are two events such that P(A)=0.3, P(B)=0.4,P(AcupB)=0.6 Find ...

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  12. If A,B are two events such that P(A)=0.3, P(B)=0.4,P(AcupB)=0.6 Find ...

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  13. If A,B are two events such that P(A)=0.3, P(B)=0.4,P(AcupB)=0.6 Find ...

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  14. If A,B are two events such that P(A)=0.3, P(B)=0.4,P(AcupB)=0.6 Find ...

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  15. If A, B are events such that P(A)=0.6, P(B)=0.4 and P(AcupB)= 0.2 the...

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  16. If A, B are events such that P(A)=0.6, P(B)=0.4 and P(AcupB)= 0.2 the...

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  17. If A, B are events such that P(A)=0.6, P(B)=0.4 and P(AcupB)= 0.2 the...

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  18. If A, B are events such that P(A)=0.6, P(B)=0.4 and P(AcupB)= 0.2 the...

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  19. If A and B are independent events,show that A^c and B^c are independ...

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  20. If A and B are independent events,show that A^c and B^c are independ...

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