A Multiplication Based Logic Puzzle

78 is a composite number. 78 = 1 x 78, 2 x 39, 3 x 26, or 6 x 13. Factors of  78: 1, 2, 3, 6, 13, 26, 39, 78. Prime factorization: 78 = 2 x 3 x 13.

78 is never a clue in the FIND THE FACTORS 1-10 or 1-12 puzzles.

Here’s a sample of a very creative cartoon by Marek Bennett. I especially like this one because it features a quote from G. H. Hardy, a hero of mine. Because of Hardy, the world knows about Ramanajan, possibly the greatest mathematician of the 20th century.


Continuing our reader’s notes from A Mathematician’s Lament
This time, quoting G. H. Hardy’s 1940 essay, A Mathematician’s Apology:

<< BEFORE: “Mathematics is an Art”

NEXT: What the heck does that mean? >>


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