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In a container , there are 2 green marbles and 2 red marbles . You randomly pick the marbles. What is the probability that both of the are green?

In a container , there are 2 green marbles and 2 red marbles . You randomly pick the marbles. What is the probability that both of the are green? Correct Answer 1/6

green ball = 2 Red ball = 2 From 4 balls, possibility of 2 green = 4C2 = 6 From 2 balls, possibility of 1 green = 2C2 = 1. From rest 2 balls, possibility of being green = 2C2 = 1 Possibility of 2 green = (2C2 x 2C2)/4C2 = (1×1)/6 = 1/6 Ans: 1/6

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