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Qus: If the probability of an event to happen is 0.3 and the probability of the event not happening is:

Qusयदि किसी घटना के घटित होने की संभावना 0.3 है और घटना के न होने की संभावना ____ है:

A. 0.7
B. 0.6
C. 0.5
D. None of the above


Solution
A. 0.7



Explanation
Probability of an event not happening = 1 – P(E) P(not E) = 1 – 0.3 = 0.7
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