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Two items are chosen a lot containing 10...

Two items are chosen a lot containing 10 items of which 3 are defective,then the probability that at least one of them is defective:

A

`(2)/(7)`

B

`(2)/(3)`

C

`(7)/(10)`

D

`(3)/(10)`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Two items are chosen from a lot containing twelve items of which four are defective, then the probability that at least one of the item is defective

    A
    `(19)/(33)`
    B
    `(17)/(33)`
    C
    `(23)/(33)`
    D
    `(13)/(33)`

  • Two items are chosen from a lot containing twelve items of which four are defective, then the probability that at least one of the item is defective

    A
    `19/33`
    B
    `17/33`
    C
    `23/33`
    D
    `13/33`

  • In a box containing 100 bulbs, I0 are defective. The probability that out of a sample of 5 bulbs, none is defective is

    A
    `10^(-1)`
    B
    `((1)/(2))^(5)`
    C
    `((9)/(10))^(5)`
    D
    `(9)/(10)`

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