Answer: 11/92
Step-by-step explanation:
Probability is expressed as
number of favorable outcomes/number of total outcomes
From the information given,
number of green marbles = 11
number of red marbles = 7
number of blue marbles = 6
Total number of marbles = 11 + 7 + 6 = 24
Probability of selecting a blue marble = 6/24 = 1/4
Since the marble is not replaced, total number of marbles left = 24 - 1 = 23
Probability of selecting a green marble = 11/23
The probability of selecting a blue marble followed by a green marble is
1/4 x 11/23
= 11/92