Answer:
2/3
Explanation:
Black= 3
Blue=4
Brown=2
Total=9
Probability of blue= number of blue/total number
=4/9
Probability of brown=number of brownies/total number
=2/9
Probability of the sock to be blue or brown=Probability of blue+ probability of brown
=4/9+2/9
=4+2/9
=6/9
=2/3