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A box contains 5 defective and 15 non...

A box contains 5 defective and 15 non -defective bulbs two bulbs are chosen at random . Find the probability that both the bulbs are non - defective .

A

`5/19`

B

`3/20`

C

`21/38`

D

none of these

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The correct Answer is:
C
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ARIHANT SSC-PROBABILITY-INTRODUCTORY EXERCISE -(20.1)
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