Answer:
#1
At the start the total number is 10, male fish = 6
At the second time the total number is 9, male fish = 5
Probability of two male fish is:
- P(m and m) = 3/5*5/9 = 1/3
#2
- a) The events are independent
- b) P(4 and A) = 1/6*1/4 = 1/24
- c) P(an even number and C) = 1/3*1/4 = 1/12
- d) P(2 or 5 and B or D) = (1/6 + 1/6)*(1/4 + 1/4) = 1/3*1/2 = 1/6
#3
- P(both goals) = 0.8*0.8 = 0.64
