Problem 2908. Approximation of Pi

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Pi (divided by 4) can be approximated by the following infinite series:

pi/4 = 1 - 1/3 + 1/5 - 1/7 + ...

For a given number of terms (n), return the difference between the actual value of pi and this approximation of the constant.

Also, try Problem 2909, a slightly harder variant of this problem.

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Last Solution submitted on Jun 27, 2025

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