NCERT NCERT Book PDF Class 11 Maths Chapter 6 Permutations and Combinations

Download the Class 11 Maths Chapter 6 Permutations and Combinations NCERT Book PDF, the official 2026-27 NCERT textbook chapter. It teaches systematic counting, from the fundamental principle to arrangements and selections, and its results power probability and the binomial theorem tested in the Boards, JEE Main, JEE Advanced and CUET.

• Official NCERT 2026-27 chapter, clean and print-ready.
• Covers the fundamental principle of counting, permutations and combinations.
• Read it alongside the solved exercises and the formula sheet linked below.

This Class 11 Maths Chapter 6 Permutations and Combinations NCERT Book PDF is the official 2026-27 NCERT text, checked page by page against the latest edition.

What Class 11 Maths Chapter 6 Permutations and Combinations Covers

The chapter starts with the fundamental principle of counting, defines the factorial, and then builds the formulas for permutations (arrangements) and combinations (selections). The official NCERT sections are listed below.

Key Concepts You Will Study

Students should read the chapter with a pen and note each formula as it appears. The ideas are few but must be applied with care to the wording of each problem.

• The fundamental principle of counting and when to add versus multiply.
• The factorial n! and its use in counting formulas.
• Permutations ⁿP_r, including cases with repetition and identical objects.
• Combinations ⁿC_r and the relation between P and C.
• Deciding whether a problem asks for an arrangement or a selection.

Why Download the NCERT Book PDF for This Chapter

The NCERT textbook is the single most important source for the CBSE exam, and most JEE and CUET questions from this chapter are built directly on its examples.

• Every Board question on counting comes from this text or its exercises.
• The worked examples show how to read a problem for order versus selection.
• Reading offline from the PDF avoids missing any small condition.

How to Use the NCERT Book PDF for Permutations and Combinations

Read the chapter once fully, then work through it a second time with the exercises open. A short, ordered plan keeps the two formulas from being mixed up.

• Read each section, then write its formula in your own words in a single line.
• For every problem, first decide whether order matters before choosing P or C.
• Solve the in-text examples before looking at the given solution.
• Attempt the back exercises, then check them against the NCERT Solutions below.

Other Class 11 Maths Permutations and Combinations Resources

Pair the textbook PDF with the solved answers, revision notes and formula sheet for the same chapter.

FAQs on Class 11 Maths Chapter 6 NCERT Book PDF