Heads or Tails is a simple game, which consists of tossing a coin in the air and then checking which side was facing up after it fell. It is commonly used to choose between two alternatives or to resolve a dispute between two parties. This method of choice necessarily has only two possibilities of outcome, which have the same probability of occurring. A frequent use is the decision of who will make the initial move in an activity. In football, for example, the currency decides who gets the right