probabilities. In other words, the probability of Event A happening and Event B happening is the probability of Event A multiplied by the probability of Event B. An example makes it much more intuitive. If the probability of flipping heads with a fair coin is ½, then the probability of flipping heads twice in a row is ½ × ½, or ¼. The probability of flipping three heads in a row is ⅛, the probability of four heads in a row is 1/16, and so on. (You should see that the probability of throwing four tails in a row is also 1/16.)
