Happening of an event

If the of happening of a event is 0.42 then the probability of non- happening of that event is 0.58

What is the sum of the probabilities of happeing of an event & not happening of the event ?

In two independent events the probability of happening one event is 2/7 and probability of happening of second event is 1/5 . Find the probability of happening of both events.

In two independent events the probability of happening one event is 2/7 and probability of happening of second event is 1/5 . Find the probability of happening of both events.

If the probability of occurrence of an event is p then the probability of non-happening of this event is

The probability of happening of two events A and B is 0.25 and 0.50 respectively and the probability of happening of both events A and B is 0.14. Find the probability that none of the event happens.

The probability of happening an event A in one trial is 0.4. Find the probability that the event A happens at least one in three independent trials.

The probability of happening an event A in one trial is 0.4. Find the probability that the event A happens at least one in three independent trials.

The probability of happening an event A in one trial is 0.4. Find the probability that the event A happens at least one in three independent trials.

The probability of happening an event A in one trial is 0.4. Find the probability that the event A happens at least one in three independent trials.