Dr. Foolish discovered the math formula for finding the probability of having a number of girls(or boys) in a family depending on how many children are born. As you can see, it's a college level math formula; you have to use the combination function in this formula. By the way, "#NUM!" is an error message; it means that if s > n, then you can't have that many girls!(or boys!) For example: if you have 4 children, then you can't have 5 girls!(Because 5 > 4.)
The chart only goes up to 5 children, but what if 6 children were born in a family?
What's the probability that the family will have:
Hint: I suggest you use a TI-83 Calculator to solve this!
Give up? Click here for the answer!
© Derek Cumberbatch