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There are two boxes . One box contain...

There are two boxes . One box contains 3 white balls and 2 black balls . The other box contains 7 yellow balls and 3 black balls . If a box is selected at random and from it , a ball is drawn , the probability that the ball is black is :

A

`7/20`

B

`1/5`

C

`3/20`

D

`1/3`

Text Solution

Verified by Experts

The correct Answer is:
A
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