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Math Fundamentals
Factorials & Permutations
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Arithmetic & Modulo
0/41
Exponents & Roots
0/49
Logarithms
0/49
Basic Algebra
0/46
Sequences & Summations
0/41
Number Bases
0/41
Bit Manipulation
0/41
Boolean Logic
0/40
Sets
0/41
Counting Principles
0/43
Factorials & Permutations
0/45
1
Intro
2
When Order Matters
3
Counting Small Cases
4
Vocabulary - Factorial
5
Why Factorial Counts Arrangements
6
Factorial Examples
7
Permutations of n Distinct Objects
8
Partial Permutations
9
Vocabulary - P(n,r)
10
P(n,r) Examples
11
Permutations with Repetition
12
Permutations with Repetition Formula
13
Repetition Examples
14
Permutations of Multisets
15
Multiset Permutation Formula
16
Multiset Examples
17
Circular Permutations
18
Circular Permutation Formula
19
Circular Examples
20
Counting Anagrams
21
Anagram Examples
22
Derangements
23
Derangement Formula
24
Derangement Approximation
25
Quiz: Factorials and Basic Permutations
26
Problem - Permutations
27
Permutations Approach
28
Permutations Pseudocode
29
Permutations - Implementation
30
Problem - Permutation Sequence
31
Permutation Sequence Approach
32
Permutation Sequence Pseudocode
33
Permutation Sequence - Implementation
34
Quiz: Multisets and Circular
35
Problem - Permutations II
36
Permutations II Approach
37
Permutations II Pseudocode
38
Permutations II - Implementation
39
Pattern - Backtracking for Permutations
40
Practice - Next Permutation
41
Practice - Letter Case Permutation
42
Practice - Beautiful Arrangement
43
Application - Password Strength
44
Application - DNA Sequences
45
Section 10 Recap
Combinations
0/44
Probability Basics
0/62
Divisibility & Primes
0/44
GCD & LCM
0/47
Modular Arithmetic
0/46
Big O Notation
0/49
Geometry Basics
0/45
11.1
Intro
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