Home
Class 12
MATHS
The probability that an event A happens ...

The probability that an event A happens in one treat of an experiment is 0.4. Three independent treats of the experiment are performed. Find the probability that the event A happens atleast once?

A

0.936

B

0.784

C

0.904

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Given that , `P(A)=0.4 , P(bar(A))=0.6 `
P(the event A happens at least once )
=1-p(none of the event happens )
1-(0.6)(0.6)(0.6) =1-0.2165 =0.784
Promotional Banner

Similar Questions

Explore conceptually related problems

If two coins are tossed, find the probability of the following events: Getting atleast one head

If two coins are tossed, find the probability of the following events: Getting atleast one head

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 A is 0.5 and that of B is 0.3. If A and B are mutually exclusive events, then find the probability that neither A nor B happen.

If two coins are tossed, find the probability of the following events: Getting no head

If two coins are tossed, find the probability of the following events: Getting no head

The odds against a certain event are 5 to 2, and the odds in favor of another event independent of the former are 6 to 5. Find the chance that one at least of the events will happen.

An experiment succeeds twice as often as it fails. Find the probability that in the next six trials, there will be atleast 4 successes.

An experiment succeeds twice as often as it fails. Find the probability that in the next six trials, there will be atleast 4 successes.

Three unbiased coins are tossed once. Find the probability of getting atmost 2 tails or atleast 2 heads.