A bag contains 6 red marbles, 3 blue, and 1 yellow marble. What is the probability of drawing a red marble and then a blue marbl
e if the first marble is not placed back into the bag before drawing the second marble?
1 answer:
At the start, you have 10 marbles in total and 6 red marbles. The probability of the first event is 6/10.
Since you do not place the marble back in, you now have 9 marbles in total and 3 blue marbles. This probability of the second event is 3/9.
To find the probability of both events occurring, we multiply the two probabilities together. (6•3)/(10•9)=18/90=1/5
Thus, there is a 20% chance of drawing a red marble then a blue marble without placing the red marble back in the bag.
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