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Overview of Permutations and Combinations Video Lecture | Mathematics (Maths) Class 11 - Commerce

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FAQs on Overview of Permutations and Combinations Video Lecture - Mathematics (Maths) Class 11 - Commerce

1. What is the difference between permutations and combinations?
Permutations refer to the arrangement of objects in a specific order, while combinations do not consider the order. In permutations, the order matters, while in combinations, the order does not matter.
2. How do I calculate the number of permutations?
To calculate the number of permutations, you need to use the formula P(n, r) = n! / (n - r)! where n is the total number of objects and r is the number of objects being arranged.
3. 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 3 of them on your desk. The number of permutations can be calculated as P(5, 3) = 5! / (5 - 3)! = 60.
4. What is the formula for calculating combinations?
The formula for calculating combinations is C(n, r) = n! / (r! * (n - r)!) where n is the total number of objects and r is the number of objects being chosen.
5. How are permutations and combinations used in real-life applications?
Permutations and combinations are used in various fields such as probability, statistics, and computer science. They are applied in scenarios like lottery numbers, poker hands, combination locks, and analyzing data sets with different possible arrangements.
85 videos|243 docs|99 tests

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