Instructions

Study the given information carefully and answer the questions that follow:
An urn contains 6 red, 4 blue, 2 green, 3 yellow marbles.

Question 108

If three marbles are picked at random what is the probability that two are blue and one is yellow ?

Total number of ways to pick up 3 marbles = $$^{15}C_3$$ = 455

Total number of favourable events = $$^4C_2*3$$ = 18

Hence, probability = $$\frac{18}{455}$$

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