EMT 725

Philippa M. Rhodes


What is the maximum number of pieces into which a pie can be sliced with n straight cuts?



Try some examples, make a chart, try to derive a formula.

The objective when trying to make the straight cuts to obtain the most possible pieces is to cross the previous cuts. For example, when I make cut # 3, I try to cross cuts #1 and #2.


Since we have let n = the number of cuts, we can see that the number of pieces is the sum of the first n integers plus 1. Therefore, a formula that will allow us to determine the maximum number of pieces into which a pie can be sliced with n cuts is:

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