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A lot consists of 144 ball pens of which...

A lot consists of 144 ball pens of which 20 are defective and the others are good. Nuri will buy a pen if it is good, but will not buy if it is defective . The shopkeeper drawn one pen at random and gives it to her. What is the probability that
She will not buy it ?

Text Solution

Verified by Experts

The correct Answer is:
(i) `31/36`
`5/36`
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