1/3 . we can have BB, BG, GB and GG and since BB is ruled out the sample space is GB, BG and GG so the probability of GG is 1/3
There are 8 boys and 5 girls in a class. If four students are selected at random, what is the probability that 2 girls and 2 boy are selected?
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?
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.
A bag contains Red Balls and Black Balls. Two balls are drawn without replacement. The probability that both the balls drawn are red is 1/2. What is the minimum number of Red and Black Balls for which this probability is satisfied?
