Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a total mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe.
If you ant to, maramail me your answer and I'll tell you if you're right. I can also give you clues if you want...:
There are three light switches on the ground-floor wall of a three-storey house. Two of the switches do nothing but one of them controls a bulb on the second floor. When you begin the bulb is off. You can only make one visit to the second floor. How do you work out which switch is the one that controls the light?
