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 of an event is 3/5 . Find the probability of not happening the event.

The probability that an event does not happen in one trial is 0.8. The probability that the even happens atmost once in three trials is

The probability of not happening of an event is 0.63 . The probability of happening of that events is

In a sequence of independent trials, the probability of the success in one trial is 1/4 . Find the probability that the second success takes place on or after the fourth trial in 6 trials.

Probability of happening of an event in an experiment is 0.4. The probability of happening of the event atleast once,if the experiment is repeated 3 xx under similar condition is

The probability that an event will fail to happen is 0.05. The probability that the event will take place on 4 consecutive occasions is

What could be the probability of happening of an event E?

The probability of an event that is sure to happen, is_____

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