Posted by **helpme** on Saturday, November 1, 2008 at 6:13pm.

hi i did this problem and i just want to know if its right.

3 coins are flipped , find the following probabilities:

a) P(2 heads)

b) P( at most 2 heads)

c) P(no heads)

i got

a) 1/4

b) .75

c) 5/8

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