Marbles selected at random

Algebra
Tutor: None Selected Time limit: 1 Day

What is the probability of selecting a red marble, replacing it, and then selecting a blue marble? Show your work.  There are 4 red marbles, 7 blue marbles and 5 green marbles

May 11th, 2015

Probability of selecting a red marble = 4/16 =1/4

Probability of selecting a blue marble after replacement  = 7/16

So probability of selecting a red marble, replacing it, and then selecting a blue marble = 1/4 * 7/16 = 7/64


Please let me know if you have any questions and best me if you are satisfactory.


May 11th, 2015

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