Art of Problem Solving
AoPS Online AoPS Online
Math texts, online classes, and more
for students in grades 5-12.
Visit AoPS Online ‚
Books for Grades 5-12 Online Courses
Beast Academy Beast Academy
Engaging math books and online learning
for students ages 6-13.
Visit Beast Academy ‚
Books for Ages 6-13 Beast Academy Online
AoPS Academy AoPS Academy
Small live classes for advanced math
and language arts learners in grades 1-12.
Visit AoPS Academy ‚
Find a Physical Campus Visit the Virtual Campus

Free webinar 4/3 about Learning with AoPS: Perspectives from a Parent, Math Camp Instructor, and University Professor.  
No tags match your search
M
G
Topic
First Poster
Last Poster
H
k a My Retirement & New Leadership at AoPS
rrusczyk   1571
N Mar 26, 2025 by SmartGroot
I write today to announce my retirement as CEO from Art of Problem Solving. When I founded AoPS 22 years ago, I never imagined that we would reach so many students and families, or that we would find so many channels through which we discover, inspire, and train the great problem solvers of the next generation. I am very proud of all we have accomplished and I’m thankful for the many supporters who provided inspiration and encouragement along the way. I'm particularly grateful to all of the wonderful members of the AoPS Community!

I’m delighted to introduce our new leaders - Ben Kornell and Andrew Sutherland. Ben has extensive experience in education and edtech prior to joining AoPS as my successor as CEO, including starting like I did as a classroom teacher. He has a deep understanding of the value of our work because he’s an AoPS parent! Meanwhile, Andrew and I have common roots as founders of education companies; he launched Quizlet at age 15! His journey from founder to MIT to technology and product leader as our Chief Product Officer traces a pathway many of our students will follow in the years to come.

Thank you again for your support for Art of Problem Solving and we look forward to working with millions more wonderful problem solvers in the years to come.

And special thanks to all of the amazing AoPS team members who have helped build AoPS. We’ve come a long way from here:IMAGE
1571 replies
1 viewing
rrusczyk
Mar 24, 2025
SmartGroot
Mar 26, 2025
J
H
k a March Highlights and 2025 AoPS Online Class Information
jlacosta   0
Mar 2, 2025
March is the month for State MATHCOUNTS competitions! Kudos to everyone who participated in their local chapter competitions and best of luck to all going to State! Join us on March 11th for a Math Jam devoted to our favorite Chapter competition problems! Are you interested in training for MATHCOUNTS? Be sure to check out our AMC 8/MATHCOUNTS Basics and Advanced courses.

Are you ready to level up with Olympiad training? Registration is open with early bird pricing available for our WOOT programs: MathWOOT (Levels 1 and 2), CodeWOOT, PhysicsWOOT, and ChemWOOT. What is WOOT? WOOT stands for Worldwide Online Olympiad Training and is a 7-month high school math Olympiad preparation and testing program that brings together many of the best students from around the world to learn Olympiad problem solving skills. Classes begin in September!

Do you have plans this summer? There are so many options to fit your schedule and goals whether attending a summer camp or taking online classes, it can be a great break from the routine of the school year. Check out our summer courses at AoPS Online, or if you want a math or language arts class that doesn’t have homework, but is an enriching summer experience, our AoPS Virtual Campus summer camps may be just the ticket! We are expanding our locations for our AoPS Academies across the country with 15 locations so far and new campuses opening in Saratoga CA, Johns Creek GA, and the Upper West Side NY. Check out this page for summer camp information.

Be sure to mark your calendars for the following events:
[list][*]March 5th (Wednesday), 4:30pm PT/7:30pm ET, HCSSiM Math Jam 2025. Amber Verser, Assistant Director of the Hampshire College Summer Studies in Mathematics, will host an information session about HCSSiM, a summer program for high school students.
[*]March 6th (Thursday), 4:00pm PT/7:00pm ET, Free Webinar on Math Competitions from elementary through high school. Join us for an enlightening session that demystifies the world of math competitions and helps you make informed decisions about your contest journey.
[*]March 11th (Tuesday), 4:30pm PT/7:30pm ET, 2025 MATHCOUNTS Chapter Discussion MATH JAM. AoPS instructors will discuss some of their favorite problems from the MATHCOUNTS Chapter Competition. All are welcome!
[*]March 13th (Thursday), 4:00pm PT/7:00pm ET, Free Webinar about Summer Camps at the Virtual Campus. Transform your summer into an unforgettable learning adventure! From elementary through high school, we offer dynamic summer camps featuring topics in mathematics, language arts, and competition preparation - all designed to fit your schedule and ignite your passion for learning.[/list]
Our full course list for upcoming classes is below:
All classes run 7:30pm-8:45pm ET/4:30pm - 5:45pm PT unless otherwise noted.

Introductory: Grades 5-10

Prealgebra 1 Self-Paced

Prealgebra 1
Sunday, Mar 2 - Jun 22
Friday, Mar 28 - Jul 18
Sunday, Apr 13 - Aug 10
Tuesday, May 13 - Aug 26
Thursday, May 29 - Sep 11
Sunday, Jun 15 - Oct 12
Monday, Jun 30 - Oct 20
Wednesday, Jul 16 - Oct 29

Prealgebra 2 Self-Paced

Prealgebra 2
Tuesday, Mar 25 - Jul 8
Sunday, Apr 13 - Aug 10
Wednesday, May 7 - Aug 20
Monday, Jun 2 - Sep 22
Sunday, Jun 29 - Oct 26
Friday, Jul 25 - Nov 21


Introduction to Algebra A Self-Paced

Introduction to Algebra A
Sunday, Mar 23 - Jul 20
Monday, Apr 7 - Jul 28
Sunday, May 11 - Sep 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Wednesday, May 14 - Aug 27
Friday, May 30 - Sep 26
Monday, Jun 2 - Sep 22
Sunday, Jun 15 - Oct 12
Thursday, Jun 26 - Oct 9
Tuesday, Jul 15 - Oct 28

Introduction to Counting & Probability Self-Paced

Introduction to Counting & Probability
Sunday, Mar 16 - Jun 8
Wednesday, Apr 16 - Jul 2
Thursday, May 15 - Jul 31
Sunday, Jun 1 - Aug 24
Thursday, Jun 12 - Aug 28
Wednesday, Jul 9 - Sep 24
Sunday, Jul 27 - Oct 19

Introduction to Number Theory
Monday, Mar 17 - Jun 9
Thursday, Apr 17 - Jul 3
Friday, May 9 - Aug 1
Wednesday, May 21 - Aug 6
Monday, Jun 9 - Aug 25
Sunday, Jun 15 - Sep 14
Tuesday, Jul 15 - Sep 30

Introduction to Algebra B Self-Paced

Introduction to Algebra B
Sunday, Mar 2 - Jun 22
Wednesday, Apr 16 - Jul 30
Tuesday, May 6 - Aug 19
Wednesday, Jun 4 - Sep 17
Sunday, Jun 22 - Oct 19
Friday, Jul 18 - Nov 14

Introduction to Geometry
Tuesday, Mar 4 - Aug 12
Sunday, Mar 23 - Sep 21
Wednesday, Apr 23 - Oct 1
Sunday, May 11 - Nov 9
Tuesday, May 20 - Oct 28
Monday, Jun 16 - Dec 8
Friday, Jun 20 - Jan 9
Sunday, Jun 29 - Jan 11
Monday, Jul 14 - Jan 19

Intermediate: Grades 8-12

Intermediate Algebra
Sunday, Mar 16 - Sep 14
Tuesday, Mar 25 - Sep 2
Monday, Apr 21 - Oct 13
Sunday, Jun 1 - Nov 23
Tuesday, Jun 10 - Nov 18
Wednesday, Jun 25 - Dec 10
Sunday, Jul 13 - Jan 18
Thursday, Jul 24 - Jan 22

Intermediate Counting & Probability
Sunday, Mar 23 - Aug 3
Wednesday, May 21 - Sep 17
Sunday, Jun 22 - Nov 2

Intermediate Number Theory
Friday, Apr 11 - Jun 27
Sunday, Jun 1 - Aug 24
Wednesday, Jun 18 - Sep 3

Precalculus
Sunday, Mar 16 - Aug 24
Wednesday, Apr 9 - Sep 3
Friday, May 16 - Oct 24
Sunday, Jun 1 - Nov 9
Monday, Jun 30 - Dec 8

Advanced: Grades 9-12

Olympiad Geometry
Wednesday, Mar 5 - May 21
Tuesday, Jun 10 - Aug 26

Calculus
Sunday, Mar 30 - Oct 5
Tuesday, May 27 - Nov 11
Wednesday, Jun 25 - Dec 17

Group Theory
Thursday, Jun 12 - Sep 11

Contest Preparation: Grades 6-12

MATHCOUNTS/AMC 8 Basics
Sunday, Mar 23 - Jun 15
Wednesday, Apr 16 - Jul 2
Friday, May 23 - Aug 15
Monday, Jun 2 - Aug 18
Thursday, Jun 12 - Aug 28
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

MATHCOUNTS/AMC 8 Advanced
Friday, Apr 11 - Jun 27
Sunday, May 11 - Aug 10
Tuesday, May 27 - Aug 12
Wednesday, Jun 11 - Aug 27
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

AMC 10 Problem Series
Tuesday, Mar 4 - May 20
Monday, Mar 31 - Jun 23
Friday, May 9 - Aug 1
Sunday, Jun 1 - Aug 24
Thursday, Jun 12 - Aug 28
Tuesday, Jun 17 - Sep 2
Sunday, Jun 22 - Sep 21 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Monday, Jun 23 - Sep 15
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)

AMC 10 Final Fives
Sunday, May 11 - Jun 8
Tuesday, May 27 - Jun 17
Monday, Jun 30 - Jul 21

AMC 12 Problem Series
Tuesday, May 27 - Aug 12
Thursday, Jun 12 - Aug 28
Sunday, Jun 22 - Sep 21
Wednesday, Aug 6 - Oct 22

AMC 12 Final Fives
Sunday, May 18 - Jun 15

F=ma Problem Series
Wednesday, Jun 11 - Aug 27

WOOT Programs
Visit the pages linked for full schedule details for each of these programs!

MathWOOT Level 1
MathWOOT Level 2
ChemWOOT
CodeWOOT
PhysicsWOOT

Programming

Introduction to Programming with Python
Monday, Mar 24 - Jun 16
Thursday, May 22 - Aug 7
Sunday, Jun 15 - Sep 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Tuesday, Jun 17 - Sep 2
Monday, Jun 30 - Sep 22

Intermediate Programming with Python
Sunday, Jun 1 - Aug 24
Monday, Jun 30 - Sep 22

USACO Bronze Problem Series
Tuesday, May 13 - Jul 29
Sunday, Jun 22 - Sep 1

Physics

Introduction to Physics
Sunday, Mar 30 - Jun 22
Wednesday, May 21 - Aug 6
Sunday, Jun 15 - Sep 14
Monday, Jun 23 - Sep 15

Physics 1: Mechanics
Tuesday, Mar 25 - Sep 2
Thursday, May 22 - Oct 30
Monday, Jun 23 - Dec 15

Relativity
Sat & Sun, Apr 26 - Apr 27 (4:00 - 7:00 pm ET/1:00 - 4:00pm PT)
Mon, Tue, Wed & Thurs, Jun 23 - Jun 26 (meets every day of the week!)
0 replies
jlacosta
Mar 2, 2025
0 replies
J
H
2026 AMC 8C
ChaitraliKA   3
N 2 minutes ago by PearlPython22MZ
You’ve never seen an AMC 8 quite like this…

We, ChaitraliKA and Aaronjudgeisgoat, present
THE 2026 AMC 8C

Context

This is a totally legit mock test that you can use to predict what your real AMC 8 score will be!
We created many high quality problems for this test, and put our blood, sweat, and tears into it (and if u dont take it we’ll put your blood into it as well). We GUARANTEE that when you take a look at the problems, you will be stunned by the sheer quality oozing out of them. We know this for certain as we got this exact reaction from every single newborn baby that volunteered to take this test. This mock is perfect, not just for people looking to ace the AMC 8 next year, but even for high schoolers.

[quote=ChaitraliKA]
This was my first time making a mock, I wanted to make it as realistic as possible. As a person who has never taken an AMC 8 before, I thoroughly researched the types of problems and the format before making this. After some deep analysing, I have come to the conclusion that our mock highly resembles an AMC 8 with a -100% margin of error. I personally enjoyed making this, and put my heart and soul into making the problems and writing out the solutions. There was a lot of collaboration and every question has approval from both of us. As the most respected Cringe Nerdy Mathematician in history, I can guarantee you that it's not only about the math, it's about the experience of taking it. Please scroll down and take the test now. Thank you. [/quote]

[quote=Aaronjudgeisgoat]
After writing a MATHCOUNTS mock, I figured I would try and take it a step further - create an AMC 8 mock. As a fellow person who has never taken an AMC 8 before, I knew there was work needed to be done before I could accurately create one. I thoroughly reviewed the rules for this test, as well as the format. I even made sure to make every single answer choice viable, simulating the silliable nature of the actual AMC 8. We reviewed every single question, answer and solution, and after cross-comparing it with actual MAA exams, I found that it's not 100% accurate to the exam, but 200% accurate. That's right, it's accurate and even more accurate. Overall, this was a very fun experience, creating my first AMC mock so that people in need of math problems have something to work on. I thank @ChaitraliKA for giving me the opportunity to problem write, and I had a very fun time collaborating with the Cringiest and Nerdiest Mathematician of them all. In conclusion, I implore you to click the link below and proceed with the test, as not only will you learn, you will have fun.
Thank you for your blood.
[/quote]

You have two options on how to take it: Google Docs or MathDash
Google Docs:
Problems
Please read the guidelines carefully, and submit your answers for grading to ChaitraliKA and Aaronjudgeisgoat through AoPS PMs. We will send you the solutions as well, once we have graded you.
MathDash:
https://mathdash.fly.dev/contest/2026amc8c
If you do it on MathDash, we will still send you your final score through AoPS PMs, due to some issues.

We expect to start grading on April 15.

The leaderboard will be updated on the MSM post.
Good luck :)!


Please don't get this locked again. I will be very sad if that happens, because this is my 1000th post :wow:. We put a lot of effort into this. If you're going to be a goody-two-shoes, just try to solve the legit problems and ignore the rest.

If you don't want to waste time, here are the legit problems that we would like you to try
3 replies
ChaitraliKA
Today at 1:03 PM
PearlPython22MZ
2 minutes ago
J
H
2025 MATHCOUNTS State Hub
SirAppel   79
N 34 minutes ago by DhruvJha
Previous Years' ``Hubs": (2022) (2023) (2024)Please Read

Now that it's April and we're allowed to discuss, and no one else has made this yet ...
[list=disc]
[*] CA: 43 (45 44 43 43 43 42 42 41 41 41)
[*] NJ: 43 (45 44 44 43 39 42 40 40 39 38) *
[*] NY: 42 (43 42 42 42 41 40)
[*] TX: 42 (43 43 43 42 42 40 40 38 38 38)
[*] MA: 41 (45 43 42 41)
[*] WA: 41 (41 45 42 41 41 41 41 41 41 40) *
[*] FL: 39 (42 41 40 39 38 37 37)
[*] IN: 39 (41 40 40 39 ?? 35)
[*] NC: 39 (42 42 41 39)
[*] PA: 38 (41 40 40 38 38 37 36 36 34 34) *
[*] MD: 37 (43 39 39 37 37 37)
[*] CT: 36 (44 39 ?? 36)
[*] MN: 36 (40 36 36 36 35 35 35 34)
[*] CO: 35 (41 37 37 35 35 35 ?? 31 31 30)
[*] OH: 35 (41 37 36 35) *
[*] AR: 34 (46 45 35 34 33 31 31 31 29 29)
[*] DE: 30 (34 33 32 30 30 29 28 27 26? 24)
[*] SC: 30 (33 33 31 30)
[*] RI: 29? (36 ?? ?? ??) *
[*] NE: 28 (34 30 28 28 27 27 26 26 25 25)
[*] SD: 22 (30 29 24 22 22 22 21 21 20 20)
[/list]

* means that CDR is official in that state.

Notes


Help contribute by sharing your state's cutoffs!
As per last year's guidelines, refrain from problem discussion until their official release on the MATHCOUNTS website.
79 replies
SirAppel
Today at 12:22 PM
DhruvJha
34 minutes ago
J
H
is 8 divisible by 3
Soupboy0   10
N an hour ago by K1mchi_
Is 8 divisible by 3?
10 replies
Soupboy0
Mar 25, 2025
K1mchi_
an hour ago
J
H
MATHCOUNTS Chapter Score Thread
apex304   112
N an hour ago by finevulture
$\begin{tabular}{c|c|c|c|c}Username & Grade & Score \\ \hline apex304 & 8 & 46 \\ \end{tabular}$
112 replies
apex304
Mar 1, 2025
finevulture
an hour ago
J
No more topics!
H
J
H
k I cannot into nationals, what should I do?
AMathCountsguy10   97
N Mar 9, 2025 by Shaarav14
I am an eighth grader in North Carolina and I am sort of pressured to make nats this year, I only got 26 on last year's state test (orz to @mathprodigy2011) and I have mocked 39, 40, and 37 on the 2014, 2015, and 2022 tests respectively. I am aiming for a 40 this year because that seems to be the cutoff. How should I sufficiently improve? My test is on March 14th, 2025.

To be more clear, last year I got 16/10 and on the tests I have mocked, I got 27/12, 26/14, and 25/12.
97 replies
AMathCountsguy10
Feb 21, 2025
Shaarav14
Mar 9, 2025
J
I cannot into nationals, what should I do?
G H J
Reveal topic tags
Mathcounts Nationals
MATHCOUNTS
North Carolina
L
G H BBookmark kLocked kLocked NReply
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
AMathCountsguy10
935 posts
AMathCountsguy10
#89 h  Mar 2, 2025, 6:07 PM
Y by
Soda + protein + significant salt content before test
every test
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
EaZ_Shadow
1149 posts
EaZ_Shadow
#90 h  Mar 2, 2025, 6:22 PM
Y by
sanaops9 wrote:
Boba is scientifically proven to be the best

I chug 5 energy drinks, sweat on some games, then i start the test
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Soupboy0
245 posts
Soupboy0
#91 h  Mar 2, 2025, 6:28 PM
Y by
what if ur fasting an u cant eat anything before the competition?
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
mathprodigy2011
245 posts
mathprodigy2011
#92 h  Mar 2, 2025, 6:31 PM
Y by
Soupboy0 wrote:
what if ur fasting an u cant eat anything before the competition?

thats fine, id just make sure im not going hungry or thirsty during the competition(so eat lots before you start the fasting)
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
AMathCountsguy10
935 posts
AMathCountsguy10
#93 h  Mar 5, 2025, 2:18 AM
Y by
Lol /bump
I mocked 2021 state and got 45 (29/16) sillied S21 but second-guessed T8 at the last moment lowk the test was pretty easy there were just some insights u needed to see
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
ostriches88
1527 posts
ostriches88
#94 h  Mar 6, 2025, 5:27 PM • 1 Y
Y by RocketScientist
one very specific bit of advice i have is to make sure you know how your calculator works

i had practiced with a diff calculator for all my practice/mock tests, so when i walked into target round with my brand new fancy calculator, i sillied 2 problems while having correct expressions that i just had to plug into my calculator, and missed nats by 3 pts
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
AtlantisII
551 posts
AtlantisII
#95 h  Mar 6, 2025, 5:36 PM
Y by
ostriches88 wrote:
one very specific bit of advice i have is to make sure you know how your calculator works

i had practiced with a diff calculator for all my practice/mock tests, so when i walked into target round with my brand new fancy calculator, i sillied 2 problems while having correct expressions that i just had to plug into my calculator, and missed nats by 3 pts

your not supposed to say that :skull:
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
ostriches88
1527 posts
ostriches88
#96 h  Mar 6, 2025, 5:37 PM
Y by
AtlantisII wrote:
ostriches88 wrote:
one very specific bit of advice i have is to make sure you know how your calculator works

i had practiced with a diff calculator for all my practice/mock tests, so when i walked into target round with my brand new fancy calculator, i sillied 2 problems while having correct expressions that i just had to plug into my calculator, and missed nats by 3 pts

your not supposed to say that :skull:

for clarity this happened at nc states last year
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
AtlantisII
551 posts
AtlantisII
#97 h  Mar 6, 2025, 11:15 PM
Y by
ostriches88 wrote:
AtlantisII wrote:
ostriches88 wrote:
one very specific bit of advice i have is to make sure you know how your calculator works

i had practiced with a diff calculator for all my practice/mock tests, so when i walked into target round with my brand new fancy calculator, i sillied 2 problems while having correct expressions that i just had to plug into my calculator, and missed nats by 3 pts

your not supposed to say that :skull:

for clarity this happened at nc states last year

oh oops sry
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
ostriches88
1527 posts
ostriches88
#98 h  Mar 6, 2025, 11:55 PM
Y by
AtlantisII wrote:
oh oops sry

all good, you did the right thing pointing it out

better safe than sorry

+ i should have clarified lol
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
AMathCountsguy10
935 posts
AMathCountsguy10
#99 h  Mar 7, 2025, 7:34 PM
Y by
alr so I am doing intro to CP and get ~90-95% right and about ~65% on the first try (my first solution) any tips (2/3 of my wrong problems are cp)
realised posted on 1434
This post has been edited 1 time. Last edited by AMathCountsguy10, Mar 7, 2025, 7:34 PM
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Soupboy0
245 posts
Soupboy0
#100 h  Mar 7, 2025, 7:36 PM
Y by
bro is in the eastern time zone (doxxed)
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
AMathCountsguy10
935 posts
AMathCountsguy10
#101 h  Mar 7, 2025, 10:11 PM
Y by
buddy didnt u read the op im already in nc how can i not be in est
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
AMathCountsguy10
935 posts
AMathCountsguy10
#102 h  Mar 9, 2025, 1:59 AM
Y by
/bump
anyways i only mocked 35 on 2024 state (its rly hard)
Z Y
The post below has been deleted. Click to close.
This post has been deleted. Click here to see post.
Shaarav14
141 posts
Shaarav14
#103 h  Mar 9, 2025, 7:35 PM
Y by
I am in NC, and from Carnage. TMSA Cary is better though. I would have made it to chapter and state, but kind of blundered on very easy questions.
Z Y
G
H
=
a