Answer:
2/25
Explanation:
Number of green balls, n(G) = 4
Number of purple balls, n(P) = 3
Number of orange balls, n(O) = 2
Number of white balls, n(W) = 1
Total number of balls, n(Total) = 4 + 3 + 2 + 1
n(Total) = 10
Probability of getting a green ball when the first ball was drawn
P(G) = 4/10 = 2/5
The green ball is replaced, so the total number of balls did not change
Probability of getting an orange ball the second time, P(O) = 2/10 = 1/5
Probability of getting a green ball then an orange ball
P(G then O) = 2/5 x 1/5
P(G then O) = 2/25
