Here's my problem: I have to recieve packages and input things like serial numbers, part numbers, and tracking numbers into various paperwork forms.<BR><BR>It is of course, generally preferable to use ...
Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...
Scientists have picked apart some 500-year-old calculations from the Inca empire. The team deciphered the maths from a series of 'khipus': elaborate structures of coloured, knotted strings.
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