100 Day Summer Challenge

100 problems in 100 days. #100problems

Day 96

96 of 100: Murphy's Probability

Three people all set down their identical notebooks on a table. On the way out, they each randomly pick up one of the notebooks. What is the probability that none of the three people pick up the notebook that they started with?

A chart or table may help sort through the possibilities in this scenario.

×

Problem Loading...

Note Loading...

Set Loading...