Answer:
The list of these events from least likely to most likely is Blue-Blue -> Black-Blue -> Blue-Black -> Black-Black
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
Possible outcomes:
Black - Black
Black - Blue
Blue - Black
Blue - Blue
Probability of each outcome:
Black-Black:
14 out of 20, and then 9 out of 12. So
Black-Blue:
14 out of 20, then 3 out of 12. So
Less likely than black-black.
Blue - Black:
6 out of 20, then 9 out of 12. SO
More likely than black-blue, less likely than black-black.
Blue - Blue
6 out of 20, then 3 out of 12
Least likely of the outcomes.
List these events from least likely to most likely:
The list of these events from least likely to most likely is Blue-Blue -> Black-Blue -> Blue-Black -> Black-Black