Abstract
Man has always been interested in predicting the outcome of various random events and at times has been prepared to risk his money, his wife and on occasions his life, on his ability to make the correct guess. There has been much speculation and concern about the effect of gambling on the national well-being, but there is little doubt that for the individual there is great satisfaction to be derived from making a correct prediction and winning something for nothing. Many charities and some governments benefit from this common desire.

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