SOLUTION: A family includes 3 kids. Determine the probability that:
a. 3 are = 2 boys and one girl
b. there are at least one boy
c. there are children of both sex
d. there is at most one
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Question 1110062: A family includes 3 kids. Determine the probability that:
a. 3 are = 2 boys and one girl
b. there are at least one boy
c. there are children of both sex
d. there is at most one girl
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Look at all of the possibilities there are 8 of them.
BBB
BBG
BGB
BGG
GBB
GBG
GGB
GGG
So then,
a) 2B and 1G: BBG, BGB, GBB - 3 outcomes.
b) Let's do it backwards. No boys - GGG - 1 outcome.
The complement is 7.
c) Again, use the complement, BBB and GGG - 2 outcomes so,
d) So no girls or 1 girl, BBB, BBG, BGB, GBB, 4 outcomes,
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