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Akimi4 [234]
3 years ago
5

The number of marbles of different colors stored in a hat is listed below:

Mathematics
2 answers:
n200080 [17]3 years ago
4 0
4 red marbles
10 green marbles
7 blue marbles
4+10+7=21 marbles total

P(blue)=(blue marbles)/(total marbles)=7/21=1/3

P(blue,blue)=(blue marbles)/(total marbles)*(blue marbles)/(total marbles)=7/21*7/21=1/3*1/3=1/9

Note:Because the marble is replaces, we can keep '21' as the number of total marbles for the second draw

Answer=1/9
Novay_Z [31]3 years ago
3 0
The probability is 7/21 * 7/21, or 0.0159.
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