Write a ten-digit number so that the first digit tells how many zeros there are in the number, the second how many ones, the third how many twos, and so forth.
*P.S. Your help is greatly appreciated. My math professor told me that the correct answers yields a $20 Ben and Jerry's coupon.
i cannot take credit for this one. my collegue came up with it. pretty quickly actually. once he showed me the trick, it was very simple.
if you can figure out what happened, good for you. if you can't, tell me and i'll edit this post and explain it