A cute math puzzle

Using each of digits 1, 2, 3 once, and only basic arithmetic operations, write a formula for 19.

(The only “basic arithmetic operations” here are add/subtract/divide/multiply, powers and roots, and factorials; in particular, no decimals or greatest-integer functions.)

– from http://www.math.harvard.edu/~elkies/Misc/index.html (spoiler alert!)

3 Responses to A cute math puzzle

  1. […] A cute math puzzle « Suhaimi RamlyDescription : A cute math puzzle. Using each of digits 1, 2, 3 once, and only basic arithmetic operations, write a formula for 19. (The only “basic arithmetic operations” here are add/subtract/divide/multiply, powers and roots, and factorials; …http://suhaimiramly.wordpress. .. […]

  2. (cube of 3 – cube of 2 ) *1

    =27-8

    =19

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