"If you have 9 pairs of shoes and give 3 of them away, how many do you have left?"
Easy, 15.
9 pairs = 18 shoes - 3 = 15.
Registration denied.
![Mf Tongue](images/smilies/modern/mf_tongue.gif)
"Correct" answer (or I wouldn't be able to post this right now) is 6.
I knew it wanted 6, but guess I had to prove a point in spite of knowing it would be rejected... lol.