John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2. What is the probability that the other kid is also a girl?
Hint: It is not 1/2 as you would first think.
A couple has two children, one of the child is a boy. What is the probability that the other child is also a boy?
Hint: Its not 1/2.
Three ladies get together for a bit of fun. When they arrive they all kick off their shoes. Unfortunately, when they leave they are not quite in the same frame of mind so they each grab a left shoe and a right shoe at random, and put them on. What is the probability that when they leave that none of them is wearing either of their own shoes?
If two letters are randomly taken one after the other from the word AUGUST, what is the probability that none of the letters would be vowels?
There are 12 boys and 9 girls in a class. If three students are selected at random, what is the probability that 1 girl and 2 boys are selected?
