Answer:
6/55
Explanation:
4 red + 7 blue = 11 marbles in total
P(first red) = 4/11.
we now have 10 marbles left. 3 of them are red.
P(second red) = 3/10
P(both red) = 4/11 X 3/10 = 12/110 = 6/55
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