The probability of happening of an event in trial is 0.5. The probability of happening of the event atleast once if the experiment is repeated four times is

The probability of happening of an event in a trial is 0.5. The probability of happening of the event atlest once if the experiment is repeated 3 times is

The probability of happening of an event in a trial is 0.5. The probability of happening of the event atlest once if the experiment is repeated 3 times is

The 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 times is

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 times under similar condition is

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

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

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

If probability of happening of an event is 5/9 , then the probability of non-happening of this event is: