posted by Rmz .
A parent's chance of passing a rare inherited disease on to a child is 0.15. What is the probability that, in a family of three children, none of the children inherits the disease from the parent?
How does that work?
The chance of a child NOT having the inhertited disease is 0.85. For none of the three children to get it, the probability is 0.85^3 = 0.614