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There are 20 pairs of shoes in a closet....

There are 20 pairs of shoes in a closet. Four shoes are selected at random. The probability that there is exactly one pair is

A

`(""^(20)C_1 xx ""^(19)C_1)/(""^(40)C_4)`

B

`(""^(20)C_1 xx ""^(38)C_1)/(""^(40)C_4)`

C

`(""^(20)C_1 xx( ""^(38)C_2 -""^(19)C_1))/(""^(40)C_4)`

D

`(""^(20)C_1 *""^(2)C_1)/(""^(40)C_4)`

Text Solution

Verified by Experts

The correct Answer is:
C
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