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Question

The sum of the probabilities of all the elementary events of an experiment is __.
  1. 1
  2. -1
  3. greater than 1
  4. 0


Solution

The correct option is A 1
An event having only one outcome of the experiment is called an elementary event.
If E1,E2,E3,,En are elementary events, then E1+E2++En=1.

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