a)
b)
c)
d) 2 blue, 1 red:
or 2 blue, 1 white:
e) 3 red:
or 3 blue:
or 2 red, 1 blue:
or 1 red, 2 blue:
A box contains 4 red, 3 blue and 2 white balls. In how many ways can we select 3balls such that:
a. They are all different color.
b. They are all red.
c. 2 are blue 1 is white.
d. Exactly 2 are blue.
e. None is white.