A man leaves from kerala with 3 sacks
of 30 coconuts each. (The capacity of every sack is 30 coconuts)
He comes across 30 tolls till he reached Bangalore.
He has to give 1 coconut for each sack containing coconuts as toll tax at every toll.
How much coconuts are left with him at Bangalore❓
The answer is not zero...
Only master brain works.