1.

In a class 30% of the student fail in Mathematics,20% of the student fail in English and 10% fail in bothIf he has failed in Mathematics, what is the probability that he has failed in English

Answer»

SOLUTION :If he has FAILED in MATHEMATICS, then the probability thet he has failed in ENGLISH
`P(B/A)=P((ACAPB))/(P(A))=(10/100)/(30/100)=1/3`


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