Question 1193665
None will survive is 0.10^60=1 x 10^(-60)
exactly 50 is 60C50*0.9^50*0.1^10=0.0389
at least 3 will survive.
we know the probability for 0 is minuscule.
the probability for 2 is 60C2*0.9^2*0.1^58=1.4 x 10^(-55)
only 1 survival will be even more minuscule a probability, so the answer is 100%.