
ProbabilityTossing a coin, keeping an object in a box, selecting a student from a group of students , rolling a dice are all processes which have a number of possible outcomes . The two possible outcomes of tossing a coin are heads and tails, rolling a dice has six outcomes, a student can be selected from a group of students in many ways. So to arrive at an answer its best to follow the rules of probability.
Notations:If n belongs to N ( N = { set of natural numbers} ) then the product 1x2x3x4x.....n is denoted by n! and read as n factorial .Fundamental theorems of probability
