The probability of drawing a red marble on the first attempt is
After the first marble is drawn, and we know it to be red, we're drawing the next marble from a pool with one less marble than before (i.e. conditioning on the event
And so
4/5 + 3 + 5/6 + 5 + 2/3 how do you work this problem.
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The probability of drawing a red marble on the first attempt is
After the first marble is drawn, and we know it to be red, we're drawing the next marble from a pool with one less marble than before (i.e. conditioning on the event
And so