# Can we evaluate the any single decimal digit of pi even we skip the digit before it?

Can we evaluate any single decimal digit of pi even we skip to evaluate the digit before it?

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@R..: If you'll see the Wikipedia page, Plouffe derived an algorithm to obtain the $n$th digit of $\pi$ in arbitrary base, subsequently improved by Bellard to work in $O(n^2)$. –  Arturo Magidin Jul 22 '11 at 5:07