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Pier Operator (Posted on 2008-12-13) Difficulty: 2 of 5
Substitute each of the letters by a different decimal digit from 0 to 9 to satisfy this alphametic square root extraction problem. None of O and P can be 0.

                P I E R
√ O P E R A T O R |
   C T
      B E R
      B A C
         E  P A T
         T  I A  I
             P I  E O R
             P I  E O R

Note: Try to derive a non computer assisted method, although computer program/spreadsheet solutions are welcome.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
SolutionNo computer involvedSteve Herman2008-12-14 12:18:49
SolutionWithout knowing the whole square-root algorithm (computer assisted soln)Charlie2008-12-13 19:24:34
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