The probability that John and James pass an examination a...
The probability that John and James pass an examination are 3/4 and 3/5 respectively, find the probability of both boys failing the examination.
110
310
920
1120
Correct answer is A
Prob.(John pass)34 prob.(John fail) =1−34=14
Prob.(James pass) 35 Prob.(James fail) =1−35=25
Prob(both boys fail)14×25=110
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