A drawer contains 3 white balls and 6 black balls.  Two balls are drawn out of the box at random.  What is the probability that they both are white?
Question:
A drawer contains 3 white balls and 6 black balls.  Two balls are drawn out of the box at random.  What is the probability that they both are white?
Answer:
Let's think step by step.

user
\dfrac{1}{12}
A drawer contains 3 white balls and 6 black balls.  Two balls are drawn out of the box at random.  What is the probability that they both are white?
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