Mathematics

17 May, 13:35

A bag contains an unknown number of blue and green marbles. If the probability of drawing a green marble and then a blue marble, P (G, then B), without replacement is equal to 1 over 4 • 1, how many green and blue marbles are in the bag at the beginning?

A. 1 green and 4 blue

B. 4 green and 1 blue

C. 1 green and 3 blue

D. 3 green and 1 blue

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