Mechanical Engineering Exam > Mechanical Engineering Videos > General Aptitude for GATE > Formulae: Permutations & Combinations
Formulae: Permutations & Combinations Video Lecture | General Aptitude for GATE - Mechanical Engineering
|
198 videos|165 docs|152 tests
|
FAQs on Formulae: Permutations & Combinations Video Lecture - General Aptitude for GATE - Mechanical Engineering
| 1. What is the difference between permutations and combinations? |  |
Ans. Permutations and combinations are both mathematical concepts used to count the number of possible outcomes. The main difference between them lies in whether the order of the elements matters. In permutations, the order matters, while in combinations, the order does not matter. For example, if you have three items A, B, and C, the permutation ABC is different from CBA, but in combinations, ABC and CBA would be considered the same.
| 2. How do you calculate the number of permutations? | |
Ans. The number of permutations can be calculated using the formula:
nPr = n! / (n - r)!
Where n is the total number of items and r is the number of items taken at a time. The exclamation mark denotes factorial, which means multiplying a number by all the positive integers less than it. For example, 4! = 4 x 3 x 2 x 1 = 24.
| 3. What is the formula for combinations? | |
Ans. The formula for combinations is given by:
nCr = n! / (r! * (n - r)!)
Where n is the total number of items and r is the number of items taken at a time. Similar to permutations, the exclamation mark denotes factorial. The combination formula takes into account that the order of the elements does not matter.
| 4. How do permutations and combinations relate to probability? | |
Ans. Permutations and combinations are closely related to probability as they help calculate the number of possible outcomes in an event. In probability, permutations are used to calculate the number of ways an event can occur when the order matters, while combinations are used when the order does not matter. By knowing the total number of permutations or combinations, and the number of favorable outcomes, one can calculate the probability of an event occurring.
| 5. Can you provide a real-life example where permutations and combinations are used? | |
Ans. A real-life example where permutations and combinations are used is in lottery games. When you choose a set of numbers, the order in which the numbers are drawn does not matter, so combinations are used to calculate the odds of winning. On the other hand, if you are interested in the exact order in which the numbers are drawn, permutations would be relevant. Both permutations and combinations help determine the probability of winning a lottery prize.
Related Exams
About this Video
|
4.68/5 Rating |
|
Nov 21, 2024 Last updated |
Video Description: Formulae: Permutations & Combinations for Mechanical Engineering 2024 is part of General Aptitude for GATE preparation.
The notes and questions for Formulae: Permutations & Combinations have been prepared according to the Mechanical Engineering exam syllabus.
Information about Formulae: Permutations & Combinations covers all important topics for Mechanical Engineering 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Formulae: Permutations & Combinations.
Introduction of Formulae: Permutations & Combinations in English is available as part of our General Aptitude for GATE for Mechanical Engineering & Formulae: Permutations & Combinations in
Hindi for General Aptitude for GATE course. Download more important topics related with notes, lectures and mock test series for
Mechanical Engineering Exam by signing up for free.
Description
Video Lecture & Questions for Formulae: Permutations & Combinations Video Lecture | General Aptitude for GATE - Mechanical Engineering - Mechanical Engineering full syllabus preparation | Free video for Mechanical Engineering exam to prepare for General Aptitude for GATE.
Information about Formulae: Permutations & Combinations
Here you can find the meaning of Formulae: Permutations & Combinations defined & explained in the simplest way possible.
Besides explaining types of Formulae: Permutations & Combinations theory, EduRev gives you an ample number of questions to practice Formulae: Permutations & Combinations tests,
examples and also practice Mechanical Engineering tests.
|
198 videos|165 docs|152 tests
|
Video Timeline
|
Explore Courses for Mechanical Engineering exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
shortcuts and tricks
,study material
,mock tests for examination
,Free
,practice quizzes
,Sample Paper
,Semester Notes
,Important questions
,Summary
,video lectures
,MCQs
,ppt
,Previous Year Questions with Solutions
,Formulae: Permutations & Combinations Video Lecture | General Aptitude for GATE - Mechanical Engineering
,Formulae: Permutations & Combinations Video Lecture | General Aptitude for GATE - Mechanical Engineering
,Exam
,past year papers
,Viva Questions
,Formulae: Permutations & Combinations Video Lecture | General Aptitude for GATE - Mechanical Engineering
,Extra Questions
,Objective type Questions
;
Study Formulae: Permutations & Combinations on the App
Students of Mechanical Engineering can study Formulae: Permutations & Combinations alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Formulae: Permutations & 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 Formulae: Permutations & Combinations is prepared as per the latest Mechanical Engineering syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily