My friend Shuba works in a post office and she sells stamps. One day a man walked in and slamming seventy-five paise on the counter requested, ‘Please give me some 2 paise stamps, six times as many one paisa stamps, and for the rest of the amount make up some 5 paise stamps.’
The bewildered Shuba thought for a few moments and finally she handed over the exact fulfilment of the order to the man—with a smile.
How would you have handled the situation?

A little girl I know sells orange^ from door to door.
One day while on her rounds she sold 1/2 an orange more than half her oranges to the first customer. To the second customer she sold 1/2 an orange more than half of the remainder and to the third and the last customer she sold 1/2 an orange more than half she now had, leaving her none.
Can you tell the number of oranges she originally had? Oh, by the way, she never had to cut an orange