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Abe MantellAvailable

Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!  
Lynn HoustonU.S.
Available

I can answer questions in basic algebra and any grade school math. 
Hello Tom, These days, with the Internet, it is easy to get many digits of pi with great reliability. For example: http://www.factmonster.com/ipka/A0876705.html http://www.geom.uiuc.edu/~huberty/math5337/groupe/digits
Good question! Here are some places to read about it... https://www.quora.com/HowdidShakuntalaDeviperformsuchhugecalculationswithgreatspeedandprecision https://www.quora.com/HowdidShakuntalaDevimentallycalculatethe23rdrootofa201digitnumbercorrectly
Hello Julian, Without additional info there are literally infinitely many possibilities! The relationship could be (1) linear, (2) quadratic, (3) cubic, (4) exponential, (5) logarithmic, (6) power