SOLUTION: assume the probability is 1/2 that a child born is a girl if a family has three children. What is the probabilty of getting 1 girl is ___? the probability of getting at most two

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Question 375979: assume the probability is 1/2 that a child born is a girl if a family has three children. What is the probabilty of getting 1 girl is ___?
the probability of getting at most two girls___?
Answer by Fombitz(32388) About Me  (Show Source):
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For 3 children, there are 2%5E3 possible outcomes.
GGG
GGB
GBG
GBB
BGG
BGB
BBG
BBB
Of those, the outcomes with 1 G are 3.
P%281+G%29=3%2F8
Getting at most two girls means not 3 girls.
P(3 G)=1%2F8
P(not 3 G)+P(3G)=1
P(not 3 G)=P(at most 2G)=1-1%2F8=7%2F8