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 A Perplexing Expression (Posted on 2005-10-14)
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).

 Submitted by Brian Smith Rating: 3.5000 (6 votes) Solution: (Hide) sqrt(.2^(-2)) = 5

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 Subject Author Date Answer K Sengupta 2008-02-26 05:54:03 re: here's one Leonidas 2005-10-17 19:38:29 re: my solution using only math symbols - (did you mean math operators?) Leonidas 2005-10-17 19:36:13 here's one Josh70679 2005-10-15 23:39:17 so again--the rules Charlie 2005-10-15 15:21:50 "+" is a function? II pcbouhid 2005-10-15 14:55:46 "+" is a function? pcbouhid 2005-10-15 14:48:23 here is my solution ben 2005-10-15 04:17:36 my solution using only math symbols - (did you mean math operators?) tanx 2005-10-15 00:00:45 Best functions? Gamer 2005-10-14 23:21:57 re(4): perhaps? -- spoiler perhaps. Charlie 2005-10-14 21:22:16 spoiler - no functions, no letters, no constants pcbouhid 2005-10-14 21:16:24 re(3): perhaps? -- spoiler perhaps. Ben Bateman 2005-10-14 21:13:04 re(2): perhaps? -- spoiler perhaps. Charlie 2005-10-14 21:10:53 to Gamer pcbouhid 2005-10-14 21:07:44 re: perhaps? derek 2005-10-14 19:41:37 perhaps? derek 2005-10-14 19:40:42 Reaching, perhaps bernie 2005-10-14 18:43:58

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