Class 11 Maths · Chapter 6 · CBSE / NCERT
Permutations and Combinations
Counting without listing. You’ll learn the multiplication principle, factorials, arrangements where order matters, and selections where it does not.
14 short lessons · about 62 minutes in all
What you’ll learn
- 1Counting choices by multiplying4 min
- 2Fill the fussy place first4 min
- 3When digits or letters can repeat4 min
- 4Factorials: what n! means4 min
- 5Permutations: when order matters4 min
- 6The formula for arrangements5 min
- 7Arrangements with identical objects4 min
- 8Together, never together, fixed positions5 min
- 9Combinations: choosing, where order does not matter4 min
- 10The formula for choosing5 min
- 11Choosing is the same as leaving out4 min
- 12Choosing groups with conditions5 min
- 13Choose the letters first, then arrange them5 min
- 14Finding a word's place in dictionary order5 min
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Counting choices by multiplying · about 4 minutes
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More Class 11 Maths
The other 13 chapters.
CH 1Sets14 lessonsCH 2Relations and Functions14 lessonsCH 3Trigonometric Functions14 lessonsCH 4Complex Numbers and Quadratic Equations13 lessonsCH 5Linear Inequalities13 lessonsCH 7Binomial Theorem13 lessonsCH 8Sequences and Series14 lessonsCH 9Straight Lines14 lessonsCH 10Conic Sections14 lessonsCH 11Introduction to Three Dimensional Geometry13 lessonsCH 12Limits and Derivatives14 lessonsCH 13Statistics14 lessonsCH 14Probability13 lessons
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