A bag contains $5$ red balls, $7$ blue balls and $4$ green balls. $4$ balls are taken at ran

Question

A bag contains $5$ red balls, $7$ blue balls and $4$ green balls. $4$ balls are taken at random from the bag without replacement. Find the probability that exactly two balls are of the same colours.

Accepted Answer

$\frac12$

Probability - Probability Using Permutations and Combinations

Probability - Probability Using Permutations and Combinations

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