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A Perplexing Expression (Posted on 2005-10-14) Difficulty: 3 of 5
Using only math symbols (no functions like sin, cos, log, etc.) create an expression with only two 2s equal to 5 (no other digits or constants).

See The Solution Submitted by Brian Smith    
Rating: 3.5000 (6 votes)

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Solution spoiler - no functions, no letters, no constants | Comment 7 of 18 |

5 = sqrt{(.2)^(-2)}

I mean, my solution. 

Edited on October 14, 2005, 10:13 pm
  Posted by pcbouhid on 2005-10-14 21:16:24

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