Answer:
The probability that the marble drawn will not be blue is 7/9
Step-by-step explanation:
We have been given that
Number of blue marbles = 8
Total number of marbles = 8 + 6 + 12 +10 = 36
Probability of an event E is given by the formula

Here, we have
n(E) = 8
n (S) = 36
Hence, the probability of getting a blue marble is

Therefore, probability that the marble drawn will not be blue is given by
