SSC CGL Exam > SSC CGL Videos > Quantitative Aptitude for SSC CGL > Understanding Basics: Permutations and Combinations
Understanding Basics: Permutations and Combinations Video Lecture | Quantitative Aptitude for SSC CGL
|
314 videos|170 docs|185 tests
|
FAQs on Understanding Basics: Permutations and Combinations Video Lecture - Quantitative Aptitude for SSC CGL
| 1. What is the difference between permutations and combinations? |  |
Ans. Permutations and combinations are both mathematical concepts used to count the number of ways to arrange or select items. The main difference is that permutations consider the order of the items, while combinations do not. In permutations, the order matters, so for example, ABC is considered different from BAC or CAB. In combinations, the order does not matter, so ABC, BAC, and CAB are all considered the same combination.
| 2. How do I calculate the number of permutations? | |
Ans. To calculate the number of permutations, you need to multiply the number of choices for each position. For example, if you have 5 items and you want to arrange them in a specific order, you would start with 5 choices for the first position, then 4 choices for the second position, 3 choices for the third position, and so on. The number of permutations would be 5 x 4 x 3 x 2 x 1 = 120.
| 3. How do I calculate the number of combinations? | |
Ans. To calculate the number of combinations, you can use the formula nCr, where n represents the total number of items and r represents the number of items being selected. The formula is n! / (r!(n-r)!), where ! denotes factorial. For example, if you have 5 items and you want to select 3 of them, the number of combinations would be 5! / (3!(5-3)!) = 10.
| 4. Can permutations and combinations be used in real-life situations? | |
Ans. Yes, permutations and combinations have various applications in real-life situations. For example, permutations can be used to calculate the number of possible outcomes in a lottery draw or the number of ways to arrange a group of people in a line. Combinations can be used to calculate the number of possible combinations of ingredients in a recipe or the number of ways to select a committee from a larger group of people.
| 5. Are there any shortcuts or tricks to solve permutations and combinations problems? | |
Ans. Yes, there are some shortcuts and tricks that can be used to solve permutations and combinations problems more efficiently. For example, if you have to find the number of permutations of a set of items where some items are repeated, you can divide the total number of permutations by the factorial of the number of times each item is repeated. Similarly, for combinations, you can use the Pascal's triangle or the combination formula directly to calculate the number of combinations.
About this Video
|
4.88/5 Rating |
|
Nov 15, 2024 Last updated |
Video Description: Understanding Basics: Permutations and Combinations for SSC CGL 2024 is part of Quantitative Aptitude for SSC CGL preparation.
The notes and questions for Understanding Basics: Permutations and Combinations have been prepared according to the SSC CGL exam syllabus.
Information about Understanding Basics: Permutations and Combinations covers all important topics for SSC CGL 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Understanding Basics: Permutations and Combinations.
Introduction of Understanding Basics: Permutations and Combinations in English is available as part of our Quantitative Aptitude for SSC CGL for SSC CGL & Understanding Basics: Permutations and Combinations in
Hindi for Quantitative Aptitude for SSC CGL course. Download more important topics related with notes, lectures and mock test series for
SSC CGL Exam by signing up for free.
Description
Video Lecture & Questions for Understanding Basics: Permutations and Combinations Video Lecture | Quantitative Aptitude for SSC CGL - SSC CGL full syllabus preparation | Free video for SSC CGL exam to prepare for Quantitative Aptitude for SSC CGL.
Information about Understanding Basics: Permutations and Combinations
Here you can find the meaning of Understanding Basics: Permutations and Combinations defined & explained in the simplest way possible.
Besides explaining types of Understanding Basics: Permutations and Combinations theory, EduRev gives you an ample number of questions to practice Understanding Basics: Permutations and Combinations tests,
examples and also practice SSC CGL tests.
|
314 videos|170 docs|185 tests
|
|
Explore Courses for SSC CGL exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
MCQs
,shortcuts and tricks
,Understanding Basics: Permutations and Combinations Video Lecture | Quantitative Aptitude for SSC CGL
,Previous Year Questions with Solutions
,Extra Questions
,Exam
,Objective type Questions
,Important questions
,Semester Notes
,Viva Questions
,video lectures
,past year papers
,study material
,Understanding Basics: Permutations and Combinations Video Lecture | Quantitative Aptitude for SSC CGL
,Free
,Sample Paper
,Summary
,ppt
,Understanding Basics: Permutations and Combinations Video Lecture | Quantitative Aptitude for SSC CGL
,mock tests for examination
,practice quizzes
;
Study Understanding Basics: Permutations and Combinations on the App
Students of SSC CGL can study Understanding Basics: Permutations and Combinations alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Understanding Basics: Permutations and Combinations,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Understanding Basics: Permutations and Combinations is prepared as per the latest SSC CGL syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup