Our Math teacher gave us this problem in class just for fun.
You have five cards with individual numbers on each: 6, 2, 7, 4, and and equal sign (=). You can shuffle the cards around anyway you want, but you have to somehow make a true statement out of only these cards. I'm of the opinion that it's a trick question, but what do you guys think? Hmmm... could it be that we can actually use the cards more than once, and he simply means we couldn't add a card with a different number or symbol on it? Sigh... I dunno, it's driving me crazy.