There are 8 bags.
In each bag, there are 10 coins.
So there are 80 coins altogether.
But, out of these 8 bags, there is 1 bag which contains fake coins.
Presume, a real coin weighs 1.0 g. A fake coin weighs 0.9 g. (means there is 0.1 g difference)
Given that there is a weighing scale.
Question: How many times do I need to weigh to find out which bag contains the fake coins? (which means the max number of times is 7 since there are 8 bags)
And I think I did not phrase my question properly.
The question should be: How many times do I need to read the reading on the weighing scale in order to find out which bag contains the fake coins?
And TADA! Below is the answer! Provided by none other than Mr. 29! Hahaha..(I think there's this icon where you can actually enlarge the image to actual size)
