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Puzzle 171.  CRYPTARITHM

Solve the following cryptarithm by replacing each letter by an appropriate numeral:

S E E D
+ S O I L

_______________________________    

  T R E E

 

 

 

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Bits and Beyond ...

PERFECT NUMBERS

An integer is called a perfect number if it is equal to the sum of all of its positive factors, excluding itself.  The first perfect number is 6 because 6=1+2+3, where 1, 2 and 3 are the factors of 6.  The next is 28 because 28=1+2+4+7+14.  The next two are 496 and 8128. 

 

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