Question

There are 4 blue marbles, 5 red marbles, 1 green marble, and 2 black marbles in a bag. Suppose you select one marble at random. Find the probability. P(blue or black)

Answer 1

Answer:

total number of marbles = 12

probability = number of desired outcomes/ total number of outcomes

a) 2/12 = 1/6 = black

b) 4/12 = 1/3 = blue

c) 11/12 ( as if the marble is not green it could be blue, red or black, so total probability)

hope it helps!!

Answer 2

Explanation:

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