Question 1127294
Probability of 0 people is .9^10=0.3487
probability of 1 is 10*0.1*0.9^9=0.3874
probability of 2 is 10C2*0.1^2*0.9^8=0.1937
probability of 3 is 10C3*0.1^3*0.9^7=0.0574
at least 2 is 1- prob(0,1)=1-0.7361=0.2639
2 or 3 is 0.2511