The sum of the probabilities of all the elementary element of an experiment will be 1.the basic theory of probability States that the sum of the probabilities of the certain or sure event shall be 1,as all the events should have nearly the same chances of occurring.

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The sum of the probabilities of all the elementary element of an experiment will be 1.the basic theory of probability States that the sum of the probabilities of the certain or sure event shall be 1,as all the events should have nearly the same chances of occurring.

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The sum of probility of all elementry event is 1 true