ConsiderProbability the activityActivity or sometimes we may call it as experiment of tossing a coin twice. The outcome of each tossing may turnout to be ‘HeadHead’ or ‘TailTail’. We cannot predict the outcome with certainty. We will refer all such activitiesActivity or experiments as ‘randomRandom experiments’. Going back to our coin tossing activity, the outcome may be any of the 4 stringsString.