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Class XI Mathematics

Chapter 6: Permutations and Combinations

Standard NCERT & CBSE aligned study curriculum. Master concepts, track accuracy, revise weak areas, and challenge yourself with 9 customized practice modes.

Example 1

Selection Combinations

In how many ways can a team of 3 players be selected from a group of 5 players?

Calculation Steps:

  1. 1Identify parameters: total n = 5, selection r = 3.
  2. 2Use combinations formula nCr.
  3. 3Calculation: 5! / (3! * 2!) = (5 * 4) / 2 = 10 ways.
Solution10