I have difficulty computing the $\rm mod$ for $a ={1,2,3\ldots50}$. Is there a quick way of doing this?
How do we compute $50a^2\pmod{30000}$?
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discrete-mathematics
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1The numbers are not large by any standards. I can't see this taking anymore than a two or three minutes even by hand with a calculator. Tedious maybe, but certainly not difficult. What exact difficulties are you having? – 2012-11-23