Shakuntala Devi's Puzzle: THE PERPLEXED POSTAL CLERK
Puzzle: 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.