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 is heavier or lighter than a real gold coin. All eleven gold coins weigh the same.
You have a classic balance scale: two pans suspended from a pole with the center point balanced on a post. The scale can compare… Continue reading
Categories: Trivia Tags: balance scale, fake coin, Gold Coin, Gold Coins, three times, weight measurements
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 is heavier or lighter than a real gold coin. All eleven gold coins weigh the same.
You have a classic balance scale: two pans suspended from a pole with the center point balanced on a post. The scale can… Continue reading
Categories: Trivia Tags: balance scale, fake coin, Gold Coin, Gold Coins, three times, weight measurements
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 11 genuine coins. Can you identify the counterfeit coin and whether it is heavier or lighter in three weighings?… Continue reading
Categories: Trivia Tags: balance pan, counterfeit coin, fake coin, genuine coins
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. what is the minimum number of weighings that it would take to guarantee him finding the counterfeit coin? Assume a balance scale is used.… Continue reading
Categories: Trivia Tags: balance scale, counterfeit coin, fake coin, pound coins, stack of coins and one is counterfit
The Counterfeit Coin Problem (version 1&2)?
3 versions to counterfeit coin problems. I need an explanation to no.1&2. I can’t seem to understand my research.
Version 1:
You are given 8 coins, one of them is fake coin, which is lighter than the others. By using only the balance weighing scale at most twice, explain the steps to identify the fake coin.
Version 2:
Something similar to Version 1 but it’s 9 coins instead… Continue reading
Categories: Trivia Tags: amp, coin problems, Coins, counterfeit coin, fake coin, weighing scale
How do coinstar machines detect counterfeit coins?
I know they use weights and magnets but what else do they use to accurately detect a fake coin… Continue reading
Categories: Trivia Tags: coinstar, coinstar coin density, Coinstar Machines, counterfeit coins, fake coin, magnets, weights
