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Chapter 7 Class 11 Permutations and Combinations

Answers of Chapter 7 Class 11 NCERT Book are provided with detailed step-by-step explanation of each question. Solutions of all questions, examples, miscellaneous of Chapter 7 Class 11 Permuations & Combinations are given for your reference.


Check the questions from the Exercises given below, or study the chapter concept wise way.

The topics in the chapter include

  • What is a factorial notation?
  • Fundamental Principle of Counting (or the Multiplication Principle)
  • What is permutation?
  • Solving questions using Permuations formula (nPr)
  • Solving permutation questions when objects are repeating
  • What is combinations?
  • Difference between permutations and combinations
  • Solving questions using Combination Property - nCr + nCr-1 = n+1Cr
  • Solving questions using Combinations formula (nCr)
  • Solving questions with both permutations and combinations


Click on an exercise or topic below to start.

Serial order wise

  Ex 7.1
  Ex 7.2
  Ex 7.3
  Ex 7.4

Concept wise