Answer:
The probability that it will be blue is
![(1)/(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ybjkeso7qr5r7js5h0mv9de35dih0sxfpl.png)
Solution:
Given that,
Total marbles = 12
Blue marbles = 6
Green marbles = 2
Yellow marbles = 3
Red marble = 1
We have to find out what is the probability that the marble grabbed from the bag is blue.
Since there are total 12 marbles, so there 12 possible outcomes.
Since the number of blue marbles is 6, therefore the grabbed marble is blue has 6 possible outcomes.
Thus the probability that the grabbed marble is blue is given by
![(6)/(12) = (1)/(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/w0bk9z7ea5xc1dmrxc8fvxv2lb5p6qc0cn.png)