Assume that girls and boys are equally likely and the event \"having a girl\" do
ID: 3245834 • Letter: A
Question
Assume that girls and boys are equally likely and the event "having a girl" does not affect the future/past probability of "having a boy" and vice versa. Also, there are no twins. You see a woman walking on the street with a girl. She tells you that she has two children and that the girl with her daughter. What is the probability that the other child is a boy? (enter a fraction) Assume that girls and boys are equally likely and the event "having a girl" does not affect the future/past probability of "having a boy" and vice versa. Also, there are no twins. You see a woman walking on the street with a girl. She tells you that she has two children and that the girl with her is her youngest child daughter. What is the probability that the other child is a boy?Explanation / Answer
let girl child can be represented by G and boy child can be by B
for two children the sample space ={GG,GB,BG,BB}
9)
events where one child is girl ={GG,GB,BG}
therefore probabilty that other child is boy; given one child is girl =(2/3)
10)
events where younger child is girl ={GG,GB}
therfore probabilty that other child is boy =(1/2)