Go in with 2011, and go out with 2012. you may pass through an operation several times but not twice in a row.

SOLUTİON:

2011  +7  /2  +7  /2  +7  -5  *3  /2  +7  /2  +7  *3  -5  /2

+7  /2  +7  -5  *3  -5  *3  /2  +7  -5  *3  /2  +7  -5  = 2012

Erich’s Holiday Puzzles