number 3 3 in a family of 5 children both parents carry gene

3. in a family of 5 children, both parents carry genes for blood type A and B. Their blood types are independent of each other. The probability of having blood type A is ¼ for each child . Make a table to show the probability for 0,1,2,3,4,5 of their children having blood type A. What is the sum of the six probabilities ?

Solution