Instructions

Study the given information carefully and answer the question that follow:
A basket contains 4 red 5 blue and 3 green marbles.

Question 117

If two marbles are drawn at random what is the probability that both are red ?

Solution

Probability that both the balls are red = $$\frac{^4C_2}{^{12}C_2} = \frac{1}{11}$$


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