Thread: Simple Math Problem
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Old 10-25-2002, 02:09 AM
M.B.E. M.B.E. is offline
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Default Re: Simple Math Problem
"Anonymous" is correct. Notice that 3^4=81 so 3^128=81^32. Now when you take 81 to any whole power the ones digit can only be 1, since 1x1=1. The ones digit of 513^128 is the same as the ones digit of 3^128, which is 1.
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