Intelligence is undoubtedly a unique natural ability of human own, and its IQ level will remain unchanged throughout the life. However, many people are not sensitive to this, or more or less ignore this very value of life potential. However, through MENSA training and testing, there are more and more people all over the world, they have found that they are so smart now, you have three large bags, but do not know the specific quantity of each bag of gold coins in advance. One of the bags are all forged coins, and each coin is heavy.
55
Gram
The other two bags are all true coins, and each coin is heavy.
50
Gram
.
If you want to find out the fake coins, how many times do you have to do it?
