Asked by April
Alice and Bill are planning to have three children. (Assume that it is equally likely for a boy or a girl to be born.)
What is the probability that not all three will be of the same gender?
What is the probability that not all three will be of the same gender?
Answers
Answered by
oobleck
P(not all same)
= 1 - P(all same)
= 1 - (P(all boys) + P(all girls))
= 1 - (1/8 + 1/8)
= 3/4
= 1 - P(all same)
= 1 - (P(all boys) + P(all girls))
= 1 - (1/8 + 1/8)
= 3/4
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