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If 3/10 is the probability that an event will happen, what is the probability that it will not happen

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If 3/10 is the probability that an event will happen, what is the probability that it will not happen Select the correct answer from above options

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P(E)= 3 10 ⇒P( ˉ E )={1-P(E)}=(1- 3 10 )= 7 10 . Hence, P(not E)= 7 10 .

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