How is the value of $\\pi$ ( Pi ) actually calculated? $\begingroup$ @MarcvanLeeuwen: Dear Marc, Yes, I saw that when reading through the wikipedia entry I considered adding a discussion of these, AGM, etc , to my answer; but it seemed easier just to direct the OP to wikipedia
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Expected value of the number of flips until the first head Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers