If you feel a little odd today, your calendar might explain why. Today’s date, 9/11/13, is a mathematical phenomenon so rare that it only occurs five times every 100 years. This is the last time for ...
It is well known that the sum of cubes of three consecutive integers is always divisible by 9. Is this an isolated incident? We showed that this can be generalized to the fact that the sum of the mkth ...
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