Homework: Reading and Problem Sets

Math 220-03, Fall 2025
Rob Benedetto


All section numbers are from Richmond and Richmond, A Discrete Transition to Advanced Mathematics, 2nd ed.

This table will grow as the semester progresses and more problem sets are assigned.

All sets due on Gradescope at 11:59pm ET on their due dates.

(Think of that as 11:49pm, allowing at least 10 minutes to submit on Gradescope and assign pages to problems.)

Click here for more homework rules.

Reading, Videos, and Problem Sets
Set
Number
Due Sections
to Read
Videos
to Watch
Problem
Sheet
Solutions
0 Thu,
Sep 4
-- -- Homework 0 N/A
1 Fri, Sep 5
Mon, Sep 8
1.1 Video 1: Combining
more than two sets
Homework 1 Solutions to Homework 1
2 Tue, Sep 9
Wed, Sep 10
1.1, 1.2 Video 2: A
Union Proof
Homework 2 Solutions to Homework 2
3 Fri, Sep 12 1.2, 1.3 Video 3: A
Partition Proof
Homework 3 Solutions to Homework 3
4 Tue, Sep 16 1.4, 1.5 -- Homework 4 Solutions to Homework 4
5 Fri, Sep 19 1.6 Video 4: A Negated
Quantifier Proof
Homework 5 Solutions to Homework 5
6 Tue, Sep 23 2.1 -- Homework 6 Solutions to Homework 6
7 Fri, Sep 26 2.1, 2.2 Video 5: Odds
and Evens
Homework 7 Solutions to Homework 7
8 Tue, Sep 30
Wed, Oct 1
2.3, 3.1 Video 6: Bad Induction

Video 7: The Strong
Pigeonhole Principle
Homework 8 Solutions to Homework 8
9 Fri, Oct 10 3.2, 3.3 Video 8: A GCD Theorem

Video 9: The Euclidean
Algorithm
Homework 9 Solutions to Homework 9
10 Fri, Oct 17 6.1 Video 10: Exam 1 Proof Review Homework 10 Solutions to Homework 10
11 Tue, Oct 21 6.1 Video 11: Proving the Well-
Ordering Principle (Optional)

Video 12: Onto and
One-to-One
Homework 11 Solutions to Homework 11
12 Fri, Oct 24 6.1 -- Homework 12 Solutions to Homework 12
13 Tue, Oct 28 6.1, 6.2 Video 13: Restriction
of a Function
Homework 13 Solutions to Homework 13
14 Fri, Oct 31 6.2 Video 14: Image
and Inverse Image
Homework 14 Solutions to Homework 14
Videos to Watch: Nov 3-7
15 Wed, Nov 5 8.1 -- Homework 15 Solutions to Homework 15
16 Tue, Nov 18 8.3, 8.4 Video 15: Epsilon
Examples
Homework 16 Solutions to Homework 16
17 Fri, Nov 21 6.1, 6.2,
8.1, 8.3
(Review)
-- Homework 17 Solutions to Homework 17
18 Tue, Dec 2 8.4, 8.5 Video 16: The Bounded
Convergence Theorem
Homework 18
19 Fri, Dec 5 8.5, 6.3 Video 17: The Geometric
Series Test
Homework 19
20 Tue, Dec 9 6.3 -- Homework 20



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