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 Short equation (Posted on 2004-06-17)
Using each of the digits 2, 3, 4 and 5 only ONCE, plus one "+" sign, and one "=" sign, can you write a correct equation?

 See The Solution Submitted by Federico Kereki Rating: 2.7500 (8 votes)

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 Solution with alternates | Comment 12 of 13 |

In addition to the almost obvious where the number 2 is superscripted as an exponent (32 = 3*3 = 9):

4 + 5 = 32
5 + 4 = 32
32 = 4 + 5
32 = 5 + 4

there are additional solutions, such as where the number 4 is subscripted as a radix with the other two numbers defaulting to base 10 (24 = 210 = 2) & (34 = 310 = 3) [which is the usual default for a number with no given radix]:

2 + 34 = 5
24 + 3 = 5
3 + 24 = 5
34 + 2 = 5
5 = 2 + 34
5 = 24 + 3
5 = 3 + 24
5 = 34 + 2

 Posted by Dej Mar on 2008-01-20 03:15:47

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