The Birthday Problem

IB Mathematics HL & SL: The Birthday Problem

I like to introduce some of the more important ideas and methods in probabilty with students by not mentioning beforehand what we will be discussing in class - and start it all by asking them to answer the following two questions (the possibility of a leap year is ignored for both questions): 1. What is the minimum number of people in a group so that the probability of at least two people in the group having the same...


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