Question 1136741
What is the probability that none arrives on time?
It is .05^3=0.000125
everything else is at least 1 or 0.0.999875

prob of all 3 is .95^3=0.857
of 2 is 3 (ways it can happen)*.95*.05=0.135
of 1 is 3*0.95*0.05^2=0.007