A Multiplication Based Logic Puzzle

203 and Level 3

203 is a composite number.
Factor pairs: 203 = 1 x 203 or 7 x 29
Factors of 203: 1, 7, 29, 203
Prime factorization: 203 = 7 x 29


2014-32 Level 3

Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-08-11

A Logical Approach to FIND THE FACTORS: Find the column or row with two clues and find their common factor. Write the corresponding factors in the factor column (1st column) and factor row (top row).  Because this is a level three puzzle, you have now written a factor at the top of the factor column. Continue to work from the top of the factor column to the bottom, finding factors and filling in the factor column and the factor row one cell at a time as you go.

2014-32 Level 3 Factors


Comments on: "203 and Level 3" (2)

  1. It’s interesting that such a big non-prime number, 203, has so few factors. Am I missing something. Are 7 and 29 really the only numbers that can be divided into 203?


    • ivasallay said:

      1, 7, 29, and 203 really are the only factors of 203. 7 x 29 = 203, and since 7 and 29 are both prime, they don’t contribute any other factors.


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