# CMSC 250 Slides and Recordings. Dates for the future are guesswork

**COMBINATORICS AND PROBABILITY**

# Jan 25: Game Trees SLIDES

# Jan 26: Admin, Intro to Discrete Math SLIDES

# Jan 26: Permutations and Combinations SLIDES

# Jan 28 Binomial, Trinomial, and Knomial Thm Knomials SLIDES

# Jan 28 (Part of it) The Law of Inclusion and Exclusion SLIDES

# Feb 1 Mods, Floors, Ceilings SLIDES

# Feb 1 Making Change SLIDES

# Feb 2 The Pigeonhole Principle SLIDES

# Feb 8 Combinatorics SLIDES

# Feb 8 Dynamic Programming SLIDES

# Feb 11,16 Prob SLIDES

# Feb 15 (also Feb 8) Grid Coloring SLIDES

# Feb 16 Hat Check Problem Slides SLIDES

# Feb 17 Stars and Bars - number of solutions SLIDES

# 3Blue1Brown on Bayes ThmVideo

# 3B1B on Medical Test Paradox and B's Thm Video

# Feb 23 The Square Thm SLIDES

# Feb 24 Loaded Dice and Review SLIDES

**LOGIC**

# Mar 1 Logic Problems Review SLIDES

# Mar 2 Sets and Quantifiers SLIDES

# Mar 3 Logic Problems Review, Same slides as Mar 1

# Mar 4 Math With Quantifiers SLIDES

# Mar 9 Midterm One Review SLIDES

**PROOF TECHNIQUES**

# DID NOT DO IN CLASS, BUT HERE FOR YOUR REF Modular Arithmetic SLIDES

# Mar 22 Proof Techniques (Number Theory) SLIDES

# Mar 22 Proofs in General/Partitions SLIDES SLIDES

# Mar 23 Proof Techniques (Number Theory) SLIDES

# Mar 25 Sums, Products, Sequences SLIDES

# Apr 6 The Emptier-Filler Game SLIDES

# Apr 20 There exists Transendental Numbers SLIDES

# Apr 22 The Hat Problem (no recording) SLIDES

# Apr 26 Neurodivergence SLIDES