Peter meets Tom who is busily cutting holes with a hole puncher into coloured sheets of paper.
"Why are you doing this?", Peter asks.
"I´m producing confetti". Tom answers.
"Must be awfully painstaking", Peter comments.
"No, it´s not that bad. I always fold the sheets of paper three times. Then with every punch I get three times more confetti than I would get with the paper not being folded", Tom argues.
"No, even more", Peter objects. "You should get six times as much confetti".
Who of them is right?