In an examination, one hundred candidates took papers in physics and chemistry.Twenty five candidates failed in physics only. Twenty candidates failed in Chemistry Only. Fifteen...

In an examination, one hundred candidates took papers in physics and chemistry.Twenty five candidates failed in physics only. Twenty candidates failed in Chemistry Only. Fifteen failed in both physics and chemistry.A candidate is selected at random.

Find the probability that:

i) he failed in Chemistry if it is known that he failed in Physics.

ii) he failed in physics if it is known that he failed in chemistry.

iii) he failed either in Physics or in Chemistry but not in both.

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maurice.mutuku answered the question on August 23, 2019 at 07:13

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