Probability is a way of expressing knowledge or belief that an event will occur or has occurred. In mathematics the concept has been given an exact meaning in probability theory, that is used extensively in such areas of study as mathematics, statistics, finance, gambling, science and philosophy to draw conclusions about the likelihood of potential events and the underlying mechanics of complex systems. The present book gives you the information, your teachers expect you to know in a handy and succinct format without overwhelming you with unnecessary details. You get a complete overview of the subject.