GMAT Exam > GMAT Notes > Quantitative Reasoning > Permutations, Math Formulas For GMAT
Permutations, Math Formulas For GMAT
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:
The document Permutations, Math Formulas For GMAT is a part of the GMAT Course Quantitative Reasoning for GMAT.
All you need of GMAT at this link: GMAT
FAQs on Permutations, Math Formulas For GMAT
| 1. What is a permutation in math? |  |
A permutation in math refers to the arrangement of objects or elements in a specific order. It is a way to calculate the number of possible outcomes when the order matters.
| 2. What is the formula for calculating permutations? | |
The formula for calculating permutations is given by: P(n, r) = n! / (n - r)! where n is the total number of objects to choose from, and r is the number of objects to be chosen.
| 3. How is permutation different from combination? | |
Permutation differs from combination in terms of the order of objects. In permutation, the order matters, while in combination, the order does not matter. For example, the permutations of the letters A, B, and C would include ABC, ACB, BAC, etc., whereas the combinations would include ABC, but also ACB, BAC, and so on.
| 4. How do I calculate permutations with repetition? | |
To calculate permutations with repetition, you can use the formula: P(n; n1, n2, ..., nk) = n! / (n1! * n2! * ... * nk!) where n is the total number of objects, and n1, n2, ..., nk represent the number of times each object is repeated.
| 5. Can you provide an example of a permutation problem? | |
Sure! Let's say you have 5 different books on a shelf, and you want to arrange them on a bookshelf. How many different ways can you arrange the books? Using the permutation formula, where n is 5 (total number of books) and r is also 5 (number of books to be chosen), we have: P(5, 5) = 5! / (5 - 5)! = 5! / 0! = 5! = 5 * 4 * 3 * 2 * 1 = 120 Therefore, there are 120 different ways to arrange the 5 books on the bookshelf.
About this Document
1.5K Views
4.86/5 Rating
Apr 18, 2026 Last updated
Related Exams
Document Description: Permutations, Math Formulas For GMAT for GMAT 2026 is part of Quantitative Reasoning for GMAT preparation. The notes and questions for Permutations, Math Formulas For GMAT have been prepared according to the GMAT exam syllabus. Information about Permutations, Math Formulas For GMAT covers topics like and Permutations, Math Formulas For GMAT Example, for GMAT 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Permutations, Math Formulas For GMAT.
Introduction of Permutations, Math Formulas For GMAT in English is available as part of our Quantitative Reasoning for GMAT for GMAT & Permutations, Math Formulas For GMAT in Hindi for Quantitative Reasoning for GMAT course. Download more important topics related with notes, lectures and mock test series for GMAT Exam by signing up for free. GMAT: Permutations, Math Formulas For GMAT
Description
Permutations, Math Formulas For GMAT of Quant Reasoning on EduRev - covers all the formulas compiled in a single place. Download free PDF for last-minute revision.
Information about Permutations, Math Formulas For GMAT
In this doc you can find the meaning of Permutations, Math Formulas For GMAT defined & explained in the simplest way possible. Besides explaining types of Permutations, Math Formulas For GMAT theory, EduRev gives you an ample number of questions to practice Permutations, Math Formulas For GMAT tests, examples and also practice GMAT tests
Related Searches
mock tests for examination, Permutations, Semester Notes, Free, past year papers, Math Formulas For GMAT, Viva Questions, MCQs, Summary, shortcuts and tricks, Exam, ppt, Permutations, Extra Questions, video lectures, Math Formulas For GMAT, Math Formulas For GMAT, Sample Paper, Previous Year Questions with Solutions, pdf , Important questions, Objective type Questions, study material, Permutations, practice quizzes;