Permutations and Combinations Class 11 Formulae
Chapter 7 Permutations and Combinations
A detailed NCERT Q&A on Chapter 7 of Grade 11 Math is provided in this article. The best math teachers have these NCERT notes on Vidyakul. These NCERT notes for Year 11 Math Chapter 7 are designed to provide all Year 11 students with up-to-date information in simple language.
Students can learn and practice concepts with the NCERT notes provided by Vidyakul. Covers all the important topics in this chapter with practical questions from over 50 books. Stay connected to this article to get NCERT notes for 11th grade math.
MATHEMATICS NOTES CHAPTER -7
Points to Remember
A summary of the important points in Mathematics Chapter 7 of Class 11 is listed below. Therefore, students can refer to them for revision purposes.
If there are two tasks such that one of them can be completed in m ways, and when it has been completed in one of these m ways, the other task can be completed in n ways, then the two tasks can be completed in m×n ways.
If two tasks are such that they can be performed independently in m and n ways, then either of them can be performed in m + n ways.
If n is a natural number and r is a positive integer such that 0≤r≤n, then nPr=n!(n−r)!
If n is a real number and r is a positive integer such that 0≤r≤n, then nCr=n!(n−r)!r!.
Topics and Sub-topics
The table below highlights important topics covered in Chapter 7 - Permutations and Combinations. There are six more books in the Vidyakul library that students can refer to as they prepare for their courses. Additionally, the entire chapter contains over 1,000 exercises, with each topic containing an average of 250 exercises.
Now, in addition to practicing concepts, students can reinforce their foundations with, samples, and explanations. Custom tests are available at the end of this chapter. Quizzes help give you a good idea of ​​the different questions that might be asked on the exam.
If there are two tasks such that one of them can be completed in m ways, and when it has been completed in one of these m ways, the other task can be completed in n ways, then the two tasks can be completed in m×n ways.
If two tasks are such that they can be performed independently in m and n ways, then either of them can be performed in m + n ways.
If n is a natural number and r is a positive integer such that 0≤r≤n, then nPr=n!(n−r)!
If n is a real number and r is a positive integer such that 0≤r≤n, then nCr=n!(n−r)!r!.
Learn more about it in Permutations and Combinations Class 11 Formulae pdf.
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