A family plans to have three children. It is equally likely that each child will be a boy or a girl. Use the sample space of possible outcomes below to answer each of the following questions.
**What is $P(A)$, the probability that the first child is a girl?** [[☃ input-number 1]]
**What is $P(B)$, the probability that the last two children are boys?** [[☃ input-number 2]]
**What is $P(A\text{ | }B)$, the probability that the first child is a girl, given that the last two are boys?** [[☃ input-number 3]]
**What is $P(B\text{ | }A)$, the probability that the last two children are boys, given that the first is a girl?** [[☃ input-number 4]]
**What is $P(A\text{ and }B)$, the probability that the first child is a girl and the last two are boys?** [[☃ input-number 5]]
**What is $P(A)\cdot P(B\text{ | }A)$?** [[☃ input-number 6]]
**What is $P(B)\cdot P(A\text{ | }B)$?** [[☃ input-number 7]]
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BBB | BGB | GBB | GGB
BBG | BGG | GBG | GGG