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A box has 100 pens of which 10 are defec...

A box has 100 pens of which 10 are defective. The probability that out of a sample of 5 pens drawn one by one with replacement and atmost one is defective is

A

44478

B

`1/2(9/10)^(4)`

C

`(9/10)^(5)+1/2(9/10)^(4)`

D

`1/2 (9/10)^(5)`

Text Solution

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The correct Answer is:
C
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