Question

A box contains exactly five chips, three blue and two green. Chips are randomly removed one at a
time without replacement until all the blue chips are drawn or all the green chips are drawn. What is
the probability that the last chip drawn is green?​

Answer 1

Answer: 50%

Step-by-step explanation:

Answer 2

Given, number of ways that the 3 blue and the 2 green then, find  probability that the last chip drawn is green  

Step-by-step explanation:    

• can be arranged = 5!/(3!2!) = 10    
• Now place a white at the end, then the number of ways to arrange the remaining 4 is 4!/(2!2!) = 6    
• so prob that the last one will be green = 6/10 = 3/5