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Question

If E1,E2,E3En are n events of a sample space S and if E1E2E3En=S, then E1,E2En are called mutually exclusive and exhaustive events.


A

True

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B

False

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Solution

The correct option is B

False


We say two events are mutually exclusive if they have no outcome in common or AB=ϕ.

For more than two events to be mutually exclusive each pair should be mutually exclusive. We are not given any information of this sort in the question. So, they can be mutually exclusive or not mutually exclusive. So saying that they are mutually exclusive is wrong.

We say a set of events E1,E2,E3En are exhaustive, if their combination gives sample space S.

i.e., E1E2E3En=S

So they are Exhaustive


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