An intellignt trader travels from 1 place to another carrying 3 sacks of 30 coconuts each. No sack can hold more than 30 coconuts.
On the way he passes through 30 check points and at each check point he has to give 1 coconut for each sack.
How many coconuts will the trader be left with in the end?
Note: It will tease your brain for a while, so don’t give up :). Write your response in the comment section below.