'n Choose r'

Table of Contents:

Famous Problems Home

The Bridges of Konigsberg
· Euler's Solution
· Solution, problem 1
· Solution, problem 2
· Solution, problem 4
· Solution, problem 5

The Value of Pi
· A Chronological Table of Values
· Squaring the Circle

Prime Numbers
· Finding Prime Numbers

Famous Paradoxes
· Zeno's Paradox
· Cantor's Infinities
· Cantor's Infinities, Page 2

The Problem of Points
· Pascal's Generalization
· Summary and Problems
· Solution, Problem 1
· Solution, Problem 2

Proof of the Pythagorean Theorem

Proof that e is Irrational

Book Reviews

References

Links

Here are two links to questions (and their answers) in the Dr. Math archives.

Probability in Flipping Coins (Kay) Six pennies are flipped. What is the probability of getting two heads and four tails? Etc.

Combinatorics Basics (Scamacca) I need to prove that n chooses n-1 = n; e.g. C(n,n-1) = n.


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