The probability that and event A happens in one trial of an experiment is 0.4.Three independent trials of the experiment are performed.The probability that the event A happens at least once is
A
0.936
No worries! Weāve got your back. Try BYJUāS free classes today!
B
0.784
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
0.904
No worries! Weāve got your back. Try BYJUāS free classes today!
D
none of these
No worries! Weāve got your back. Try BYJUāS free classes today!
Open in App
Solution
The correct option is B 0.784
probability that an event happens in one trial of an experiment =0.4
Probability of that event not happening in one trial =1−0.4=0.6
Three independent trials of the experiment are performed.
probability that the event happens at least once in three trails
= 1 - Probability of that event not happening in all three trials