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OpenStudy (anonymous):
here are 3 white marbles and 7 blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without replacing the first marble chosen. What is the probability of Jamie picking two blue marbles? Please show a formula.
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OpenStudy (anonymous):
@marcnrachel 1/15
OpenStudy (anonymous):
I got 21/50
hartnn (hartnn):
while picking 1st marble, what is the probability that Jamie picks a blue one? Remember there are 3+7=10 marbles , out of which there r 7 blue marbles.
OpenStudy (anonymous):
|dw:1346859544068:dw|
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