There are red, blue, and black marbles in a bag. •The probability of pulling out a red marble is 2/5. •The probability of pulling out a black marble is 1/10. •One marble is pulled out at random. What is the probability the marble will be blue?
A. 7/10
B. 3/5
C. 1/2
D. 3/10

Answer :

The probability is 1/2

Answer:

1/2

Step-by-step explanation:

Because the 1/10 + 2/5 = 1/10 + 4/10 + 5/10 =  1/2

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