A man has mislaid his wallet. He thinks there is a 0.4 chance that the wallet is somewhere in his bedroom, a 0.1 chance it is in the kitchen, a 0.2 chance it is in the bathroom, and a 0.15 chance it is in the living room. What is the probability that the wallet is a) somewhere else? b) in either the bedroom or the kitchen?

Explanation:

Given

Solving (a): Somewhere else

This is calculated as follows;

Because it is not in any of the given places; the probability is calculated as:

This gives:

Solving (b): Bedroom or kitchen

This is calculated by adding individual probabilities

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answer; the civil right act of 1964;