# How to solve this problem?

You have 9 identical coins. Eight coins are real and one is counterfeit (fake). You are
not able to tell them apart by looking at them or touching them. But, you have a balance
scale that can detect the counterfeit coin. This scale can detect that the counterfeit coin
is lighter in weight than the real coins. You can place the coins on the balance scale in
any combination but you must do it in only 2 weighings.

Related posts:

1. Solve the challenging riddle? You have 12 coins. Eleven are made of gold; one is counterfeit. You don’t know which one because they all look alike. Also, you don’t know if the fake coin...
2. Can you please show me how to solve this? A man was given eight pound coins. howerver, one of them was fake and he did not know if the fake coin weight more or less than the other coin....
3. easy riddle,,…? You have 12 coins. Eleven are made of gold; one is counterfeit. You don’t know which one because they all look alike. Also, you don’t know if the fake coin...
4. I got asked this one in a job interview. It cooked my noodle for several minutes.? You have 12 coins, one of which is counterfeit, and a balance pan scale. The fake coin may be identified by the fact that it’s weight is different from the...
5. math question? You have 45 silver coins but one of them is a lighter weight counterfeit. How can you determin the counterfeit coin in a maximum of 3 weighings on a balance...