Probability is that part of mathematics that deals with this area of uncertainty. In our daily life we come across many situations where we deal with decision making.

� When we get up in the morning at we decide that we should go to school today or not.

� Which dress we should wear in the party?

� What should we play?

� Which subject we should study first?

And many more.

You might have seen that before a hockey match starts, captains of the two teams go out to toss a coin to decide which team will play first.

**What are the chances of winning toss by team A?**

The chances of winning toss by team are 50%. As there are 2 teams team A and team B and 2 results i.e. head and tail. If team A wins Team B will lose and vice versa. So both the teams have 50 � 50 chance of winning toss.

So the probability is a number assigned to an event that tells us the chances of occurring of that event.

**To check the probability we have experiment.**

**Experiment **is a situation involving chance or probability that leads to an outcome.

Like here On throwing a coin getting head is an outcome. An **outcome **is a result of a single trial of an experiment.

Head and Tail are the two outcomes of this experiment.

On throwing dice getting 6 is an outcome.

Anu & Manu are playing ludo. This is an experiment. On rolling a dice and getting a number say 4 is an outcome. Each outcome or collection of outcomes makes an event. Here getting each outcome 1, 2, 3, 4, 5 and 6 is an **event**. There is one more term related to probability i.e., random experiment.

A random experiment is that in which outcomes may differ each time when the experiment is performed.

Now Anu rolled the dice.**What is the probability of getting 5? On Rolling dice the probability of getting 5 is 1 upon 6.**

The outcomes are 1, 2, 3, 4, 5, 6. Thus, there are six equally likely outcomes. Thus the probability of getting 5 is 1 upon 6. So to find the probability of an event happening we need to divide the number of ways it can happen by the total number of outcomes.

**For example, there are 7 marbles in a bag, 4 are red and 3 are blue. What is the probability that a blue marble will be picked?**

Number of ways it can happen: 3 (there are 3 blues)

Total number of outcomes = 7 (there are 7 marbles in total)

So the probability is 3/7.**Read More: **

Types of Data Visualization: Bar Graph, Histogram and Pictograph

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