Week 31 CMT Style Problem - 8th Grade

Rooster

Laura and Alex actually like each other, but you’d never know it by watching them together. They argue about everything.

Recently, Laura and Alex were talking about their brothers and sisters. They noticed that their families are reversed Laura has three brothers and Alex has three sisters. Alex stated that the odds were that most families with four children would have two boys and two girls. Laura disagreed, of course. She claimed that there was a better chance of three children of one sex and one of the other.

Over lunch, the debate grew hotter and hotter, finally resulting in a bet. Laura and Alex declared that the loser of the bet would have to stand up on a chair and cluck like a chicken during lunch. They went to see their favorite teacher, Ms. Spaulding, hoping that she would know the answer. She suggested that they draw a diagram to figure it out.