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In a college 30% students fail in physic...

In a college 30% students fail in physics, 25% fail in mathematics and 10% fail in both. One student is chosen at random. The probability that she fails in physics if she failed in mathematics is

A

`(1)/(10)`

B

`(2)/(5)`

C

`(9)/(20)`

D

`(1)/(3)`

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The correct Answer is:
B
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