Assuming that the birth of a boy or a girl is equally likely, what is the probability that the three children in a family include at least one boy and one girl? Express your answer as a common fraction.
I believe this has been answered before.....but I'll try anew:
1=boy 0=girl
possibities
111
110
101
011
100
010
001
000 6 out of 8 include at least 1 boy 1 girl 6/8 = 3/4