The Qiz Go's this way..
A Lady buys goods of Rs.200 & Pays a Rs.1000 note to shopkeeper , he gets the change from the Next shop & & keeps Rs.200 for himself & Returns Rs.800 to the lady ..
After some time, The next shop owner Returns the Rs.1000 note Saying that its " Duplicate" & Takes the money Back ..
Now the Question is How much Loss did the shpokeeper Suffer ?