## Archive for 2006

Dennis Shasha, author of The Puzzler’s Elusion explains how his finger multiplication works!

Dennis Shasha, puzzle columnist for Scientific American, asks about a curious way to multiply numbers on your fingers.

Peter Winkler answers. Another puzzle next week!

## AS. A Puzzle From Peter Winkler

Peter Winkler, author of “Mathematical Puzzles: A Connoisseur's Collection”, asks how many coins are needed to cover a table.

## AR. A Quick Game

Two players take turns removing coins from a line; how can the first player always be sure to have at least as much money as the second?

## AQ. The Principle of Indifference Redux

The solution to the balls puzzle and a quick puzzle about cards.

## AO. Choosing Balls from A Bag

A fifty-fifty chance of drawing four blue balls from a bag: how many balls were blue?

## AN. More Sucker Bets

Is there always a better choice?

## AM. Arrow's Theorem

Can A be better than B, B be better than C and C be better than A? No voting system will ever be fair!

## AL. Rumors and suckers

In which we show gossip is unreliable and how you can always fleece a sucker.