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## Probability Maths Formulas for Class 12 Chapter 13

Are you looking for Probability formulas for class 12 Chapter 13? Today, we are going to share Probability formulas for class 12 Chapter 13 according to student requirements. You are not a single student who is searching Probability formulas for class 12 chapters 2. According to me, thousands of students are searching Probability formulas for class 12 Chapter 13 per month. If you have any doubt or issue related to Probability formulas then you can easily connect with through social media for discussion. Probability formulas will very helpful to understand the concept and questions of the chapter Probability.

1. The conditional probability of an event E holds the value of the occurrence of the event F as:
$$P(E\:|\:F)=\frac{E\cap F}{P(F)}\:,\:P(F)\neq 0$$
2. Total Probability: Let E1 , E2 , …. , En be the partition of a sample space and A be any event;
P(A) = P(E1) P (A|E1) + P (E2) P (A|E2) + … + P (En) . P(A|En)
3. Bayes Theorem: If E1 , E2 , …. , En are events contituting in a sample space S;
$$P(E_i\:|\:A)=\frac{P(E_i)\:P(A|E_i)}{\sum_{j=1}^{n}P(E_j)\:P(A|E_j)}$$
4. Var (X) = E (X2) – [E(X)]2

#### Summary of Probability formulas

We have listed top important formulas for Probability for class 12 Chapter 13 which helps support to solve questions related to chapter Probability. I would like to say that after remembering the Probability formulas you can start the questions and answers solution of the Probability chapter. If you faced any problem to find a solution to Probability questions, please let me know through commenting or mail.

### Maths Formulas for Class 12 by Chapters

Here Check Maths formulas for class 12 by chapter wise.