I liked the heated up conversation we had about 'sinners and 7 days', so here's a little brain teaser of my own...

You want to measure the weight of any object between 1 and 40 pounds [1, 2, 3, ...39, 40, integers]. you're given a balance scale and you have to choose 4 weights to use. What would they be?

one more thing, if you've seen this before, please PM me instead of just giving out the answer