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**MATH FORMULAS**

**Permutations:**

Note: Multiple events means multiply! This rule applies to ALL permutation, combination and probability questions in some way.

No math formula required. Draw a picture, keep track of the results and multiply

**Combinations:**

**Combination Formula **

**n **= Number of items**k **= Number of items to be selected

**Example:**

**Probability:**

**Probability = **

“and” = Multiply

“or” = Add

**Example: **

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85 videos|100 docs|176 tests

### Test: Permutation And Combination- 1

- Test | 20 ques | 40 min
### Test: Permutation And Combination- 2

- Test | 20 ques | 40 min
### Shortcuts for Permutation & Combinations to Solve Complex Problems

- Video | 10:48 min
### Permutation & Combination: Concept of Derangement for CAT

- Video | 06:13 min
### Test: Permutation & Combination- 3

- Test | 15 ques | 30 min

- Knots & Gaps
- Doc | 1 pages
- Permutation - Miscellaneous, Quantitative Reasoning
- Video | 03:25 min