That looks right.
Just checking, thanks.
7 balls are drawn from a box containing 6 blue balls and 3 red balls. Find the probability that only 1 of these is red.
Is that:
There is a box containing 3 red balls, 5 green balls, and 9 blue balls. 10 Balls are drawn without replacement. Find the probability that of these, 2 are red and 3 green.
Is that: