Math Tricks With Professor Larry-- ... Lesson 1 ...

Alright. This is Professor Larry, teaching you how to trick your friends. Alright, ask yourself this. And don't cheat to be smart, and don't open up a new webpage prior to this or print off any info and then counting it. Just try it. Alright, find 6 6-digit numbers that are divisible by 7, 11, and 13 within 30 seconds ... go.

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... can't do it? Good. No normal person can. The trick is, any sequential 3-digit number (i.e., 123 [one hundred and twenty-three]) doubled like so (i.e., 123,123 [one hundred twenty-three thousand, one hundred and twenty-three]) is divisible by 7, 11, and 13. Look, for example, six random results:

123,123
234,234
345,345
456,456
598,598
777,777

See? Simple, right? Now go off an quiz!

--This has been a Prof. Larry Lesson, trademarked by Reaper and Prof. Larry--
-- ... and, no, he's not a real professor ... just a -edited- ... >.< ... --

--"Reaper"