The sum of the probabilities of all elementary events is

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0.5

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Solution

The correct option is C
1

Elementary event is an event which has only 1 outcome.

Sum of the probabilities of all elementary events = 1

For example in tossing a coin , there are 2 events - getting a head and getting a tail.

These two events are elementary.

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Sum of probabilities of all the elementary events of an experiment is always 1.

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