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In the previous exercise, you have already learned about the fundamental principle of counting. In this article, you will get NCERT solutions for Class 11 Maths Chapter 7 exercise 7.2 where you will learn about the counting technique called "Permutations". It is a very important concept based on the fundamental principle of counting. Also, you will get questions from topics such as permutations when all the objects are distinct and factorial notation in the Class 11 Maths chapter 7 exercise 7.2 solutions. You should try to solve all the problems given in the Class 11 Maths chapter 7 exercise 7.2. You can take help from Class 11 Maths chapter 7 exercise 7.2 solutions if you are finding difficulty while these NCERT problems.
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NCERT solutions for Class 11 Maths Chapter 7 exercise 7.2 are not only important to understand the permutations but are very useful in the chapter like probability also. Also, check NCERT solutions if you are looking for the NCERT solutions from Classes 6 to 12 for Science and Maths at one place.
Also, see
Answer:
Factorial can be given as :
Class 11 Maths chapter 7 exercise 7.2 consists of questions related to finding the permutations when all the objects are distinct, factorial notation, and finding the value of factorials, etc. There are some theorems and examples given before the exercise 7.2 Class 11 Maths. You can go through these examples and theorems to understand the concept clearly. All the problems in the Class 11 Maths chapter 7 exercise 7.2 are very basic which you can solve very easily but the concept of this exercise will be useful in the upcoming exercises of this chapter.
Also Read| Permutation And Combinations Class 11 Notes
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Happy learning!!!
3! = 1x2x3 = 6
6! -4! = 1x2x3x4x5x6 - 1x2x3x4 = 720 - 24 = 696
2 ! + 4 ! = 1x2 + 1x2x3x4 = 2 + 24 = 26
6! = 1x2x3x4x5x6 = 720
Hence 2 ! + 4 ! is not equal to 6 !.
Algebra has 30 marks weightage which is the highest in the CBSE Class 11 Maths final exam.
Permutations & Combinations has 3.3 % weightage in the maths JEE Main.
Sequences & Series has 6.6 % weightage in the maths JEE Main.
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