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ilovepickles930
21.05.2020 •
Mathematics
A bag contains 3 red marbles, 4 blue marbles and 5 green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest 1000th, that both marbles drawn will be red?
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Ответ:
0.091
Step-by-step explanation:
So you have 12 marbles in all.
If you take out 1, there is a 1 / 3 chance that it is red.
If you take out the second one, there is a 3 / 11 chance it is red if the first one is red.
1 / 3 * 3 / 11 = 1 / 11
0.091
Ответ:
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