Problem Seven: Coin Mismatch
Nov 2nd, 2006 by tony
You have 101 coins, 50 of which are 
and the rest are 
. coin weights 1g more than coin. You have a balance to calculate the difference of two sides in gram. If you have to choose one coin from this 101 coins, how can you know whether it’s or ? How do you do this using the balance the least number of times?
Is that supposed to be “You have a balance to calculate the *difference* of two sides in gram.”?
you’re right! my bad
*cookie* for you