Question

The sum of probability of event A and the probability of an event A (not A) is .......,select a proper option (a), (b), (c) or (d) from given options so that the statement becomes correct.
(a) 0
(b) 1
(c) 0.5
(d) 0.4

Answer 1

Option ( b ) is correct.

Explanation :

The sum of probability of

occuring ' A ' and probability

of not occurring ' A ' = 1

p( A ) + p ( not A ) = 1

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