Question Bank | Permutations & Combinations

Lecture1 Distribution of n identical/distinct Balls into r identical/distinct Boxes, No box is empty

L2 Distribution of n identical/ distinct Balls into r identical/ distinct Boxes (Boxes can be empty)

Permutations & Combinations: Non-consecutive selection on a circle Formula proof with examples

P&C Assignment 2 Q1 | Re-explained in Hindi | 6 white & 6 black balls are distributed among 10 urns

Amazing JEE Delight | P&C | CMI 2022 | A8 | JEE Delight | Chennai mathematical institute

Number of onto functions formula proof: Summation mCr(-1)^r(m-r)^n with example n=4 & m=2

Permutations & Combinations: Non-consecutive selection in a row n-r+1Cr Formula proof with example

Concept Check | Linear vs Circular permutation Ways to paint 6 faces of cube with 6 different colors

Permutations & Combinations: Consecutive selection with examples (details in description)

Complete Derangement (Hindi): Theory, Summation & Recursive Formula proof, Application & 5 Examples

Number of Non-decreasing & Non-increasing functions formula proof (Two methods)

P&C: Number of functions, one-one, many-one, into, onto, bijective, increasing, non-decreasing

P&C: Number of Reflexive, Symmetric, Anti symmetric, Transitive? & Equivalence relations

Combinations: A very common beginner's' doubt in combinations

P&C: Number of fresh lines formed from points of intersection of given n lines=n(n-1)(n-2)(n-3)/8