The Pigeonhole Principle: Problem 3

Problem: At least how many people would you have to get from a street to make sure that at least 3 people were born in the same month?

Key: How can you express the information given in the problem using variables and the equations from Concepts and Equations?

Remember: Word problems don't always tell you exactly what you're looking for. Sometimes, they can switch the order of somethings, too!