A bag contains 5 red, 3 green, 4 blue and 8 yellow marbles.

Total number of marbles = 5+3+4+8 = 20

we have to find probability of randomly selecting a green marble and then a yellow marble if the first marble is replaced..

first probability of selecting green marble is 3/20.

and probability of selecting a yellow marble will be...8/20

but in question ..first marble can be replaced

the required probability will be (3/20) * (8 / 20) = 24/400 = 3/50

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