Russian Peasant

         The greatest officially recorded number of children born to one mother is 69.  In twenty-seven different pregnancies she gave birth to sixteen pairs of twins, seven sets of triplets, and four sets of quadruplets.

         It is rare to find families of five boys or five girls, let alone families with sixty-nine boys or girls.  What is the probability of families of different sizes having children who are all girls or all boys?

         What if the family consists of …

a)      one child?

b)      two children?

c)       three children?

d)      four children?

e)       five children?

What about the Russian peasant’s family?

How can you predict the number of same sex children in any size family?

7.9  Statistics & Probability Concepts