How would I calculate something like 30! by hand? Is it necessarily tedious? Or are there some techniques to make it faster and easier?
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2Depends on what form you want it in. You can pretty easily do the prime factorization for example. – Adam Hughes Aug 13 '16 at 15:26
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2There are approximations to calculate factorials, like the Stirling approximation and Ramanujan's factorial approximation. – Curious Aug 13 '16 at 15:29
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1Do you want the exact value, or is an approximation sufficient? Do you have log tables at hand? – Ross Millikan Aug 13 '16 at 15:43