Question 1189328
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A bag contains 5 white and 7 black balls. If 3 are drawn from the bag {{{highlight(without_replacement)}}}, 
what is the probability that
a) All are white
b) 2 are white and one is black
c) All are of same color
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In the post by @greenestamps, the formulas (2) and (3) should be corrected in this way



(2) Number of ways of choosing all 3 white (and 0 black): C(5,3)*C(7,0)


(3) Number of ways of choosing 2 white and 1 black: C(5,2)*C(7,1)