A box contains 6 black, 5 brown and 2 yellow balls. If 2 balls are selected at random, what is the probability that both are black?
Question
Solution 1
To solve this problem, we need to determine the probability of selecting 2 black balls out of the total number of balls in the box.
Step 1: Calculate the total number of balls. Total balls = 6 black + 5 brown + 2 yellow = 13 balls.
Step 2: Calculate the number of ways to choose 2 balls out of 13.
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