5 Aug 2022 1:33 am
OK, who's smart?!?
Here's the opening rules.
You have 12 marbles that look exactly the same. 11 of them weigh exactly the same, and the 12th is slightly lighter or heavier, but so slightly that you cannot tell without a scale.
You have a legal scale and you get 3 chances to weigh the marbles against each other.
After the 3rd weighing, you must be able to determine which marble is different, and whether it is lighter or heavier than the others. This process must be the same every time, and work every time in every possible scenario. No getting lucky!
I'll know if you cheat and look it up.
Here's the opening rules.
You have 12 marbles that look exactly the same. 11 of them weigh exactly the same, and the 12th is slightly lighter or heavier, but so slightly that you cannot tell without a scale.
You have a legal scale and you get 3 chances to weigh the marbles against each other.
After the 3rd weighing, you must be able to determine which marble is different, and whether it is lighter or heavier than the others. This process must be the same every time, and work every time in every possible scenario. No getting lucky!
I'll know if you cheat and look it up.