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Two balls are selected from two black a...

Two balls are selected from two black and two red balls. The probability that the two balls will have no black balls is

A

`(1)/(7)`

B

`(1)/(5)`

C

`(1)/(4)`

D

`(1)/(6)`

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • Threre are 9 red,7 white and 4 black balls in an urn. If two balls are selected at random what is the probability that one ball is white and the other ball is red ?

    A
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    B
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    C
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    A
    `(7)/(20)`
    B
    `(1)/(5)`
    C
    `(3)/(20)`
    D
    `(1)/(3)`

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