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Contests & Programs AMC and other contests, summer programs, etc.
AMC and other contests, summer programs, etc.
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Contests & Programs AMC and other contests, summer programs, etc.
AMC and other contests, summer programs, etc.
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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.

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0 replies
jlacosta
Mar 2, 2025
0 replies
Help Pls
deetimodi   0
4 minutes ago
Can anyone help please? I tried to set an equation up and it looked like $0.07x+500000-0.08x=6240$. But I got an odd answer and isn't even close to one of the answer choices.
0 replies
deetimodi
4 minutes ago
0 replies
MathPath
PatTheKing806   0
19 minutes ago
Is anybody else going to MathPath?

I haven't gotten in. its been 3+ weeks since they said my application was done.
0 replies
PatTheKing806
19 minutes ago
0 replies
USA Canada math camp
Bread10   27
N 19 minutes ago by cowstalker
How difficult is it to get into USA Canada math camp? What should be expected from an accepted applicant in terms of the qualifying quiz, essays and other awards or math context?
27 replies
+1 w
Bread10
Mar 2, 2025
cowstalker
19 minutes ago
Distributing cupcakes
KevinYang2.71   19
N 42 minutes ago by sixoneeight
Source: USAMO 2025/6
Let $m$ and $n$ be positive integers with $m\geq n$. There are $m$ cupcakes of different flavors arranged around a circle and $n$ people who like cupcakes. Each person assigns a nonnegative real number score to each cupcake, depending on how much they like the cupcake. Suppose that for each person $P$, it is possible to partition the circle of $m$ cupcakes into $n$ groups of consecutive cupcakes so that the sum of $P$'s scores of the cupcakes in each group is at least $1$. Prove that it is possible to distribute the $m$ cupcakes to the $n$ people so that each person $P$ receives cupcakes of total score at least $1$ with respect to $P$.
19 replies
KevinYang2.71
Mar 21, 2025
sixoneeight
42 minutes ago
Inequalities
lgx57   1
N Yesterday at 2:52 PM by sqing
Let $a,b,c>0$,$\frac{a^2+b^2+c^2}{ab+bc+ca}=2$, find the minimum of

$$\frac{a^3+b^3+c^3}{abc}$$
1 reply
lgx57
Yesterday at 2:25 PM
sqing
Yesterday at 2:52 PM
that statement is true
pennypc123456789   2
N Yesterday at 2:44 PM by pennypc123456789
we have $a^3+b^3 = 2$ and $3(a^4+b^4)+2a^4b^4 \le 8 $ , then we can deduce $a^2+b^2$ \le 2 $ ?
2 replies
pennypc123456789
Yesterday at 9:27 AM
pennypc123456789
Yesterday at 2:44 PM
Inequalities
sqing   6
N Yesterday at 2:36 PM by sqing
Let $ a,b,c\geq 0 $ and $a+b+c=1$. Prove that$$a^3b+b^3c+c^3a+\frac{473}{256}abc\le\frac{27}{256}$$Equality holds when $ a=b=c=\frac{1}{3} $ or $ a=0,b=\frac{3}{4},c=\frac{1}{4} $ or $ a=\frac{1}{4} ,b=0,c=\frac{3}{4} $
or $ a=\frac{3}{4} ,b=\frac{1}{4},c=0. $
6 replies
sqing
Saturday at 3:55 PM
sqing
Yesterday at 2:36 PM
2 math problems
Bummer12345   0
Yesterday at 12:52 PM
problem 1
problem 2
0 replies
Bummer12345
Yesterday at 12:52 PM
0 replies
Prove that $n$ is a prime number or the square of a prime number.
kyotaro   0
Yesterday at 10:12 AM
Let $n$ be an odd positive integer satisfying $2^n-1$ with exactly 2 distinct prime factors. Prove that $n$ is a prime number or the square of a prime number.
0 replies
kyotaro
Yesterday at 10:12 AM
0 replies
Help me please
ntu0301   0
Yesterday at 7:37 AM
Determine all integers $n>1$ that satisfy the following condition: For every integer k such that $0\le k<n$ there always exists a positive integer $A$ that is divisible by n and $S(n)\equiv k (mod n) $. $S(n)$: sum of elements of $A$
0 replies
ntu0301
Yesterday at 7:37 AM
0 replies
what actually happens after the usamo
bubby617   1
N Yesterday at 7:37 AM by Indpsolver
i keep getting different answers for how the selection process gets down from the usamo winners to the IMO team so can someone set the record straight for me
1 reply
bubby617
Yesterday at 2:47 AM
Indpsolver
Yesterday at 7:37 AM
Geometry Problem
JetFire008   1
N Yesterday at 6:22 AM by JetFire008
Equilateral $\triangle ADC$ is drawn externally on side $AC$ of $\triangle ABC$. Point $P$ is taken on $BD$. Find $\angle APC$ if $BD=PA+PB+PC$.
1 reply
JetFire008
Yesterday at 5:47 AM
JetFire008
Yesterday at 6:22 AM
USAMO question
bubby617   2
N Yesterday at 2:44 AM by Andyluo
if i had qualified for the usa(j)mo (i wish), would i have been flown out for free like mathcounts nationals or do you have to plan your own trip for going to the usamo
2 replies
bubby617
Yesterday at 2:32 AM
Andyluo
Yesterday at 2:44 AM
A hard inequality
JK1603JK   2
N Yesterday at 2:25 AM by sqing
Let a,b,c\ge 0: a+b+c=3. Prove \frac{1}{abc}+\frac{12}{a^2b+b^2c+c^2a}\ge 5.
2 replies
JK1603JK
Yesterday at 1:40 AM
sqing
Yesterday at 2:25 AM
Apply for Team USA at the International Math Competition (IMC)!
peace09   54
N Mar 18, 2025 by profhong
The International Math Competition (IMC) is essentially the elementary and middle school equivalent of the IMO, with individual and team rounds featuring both short-answer and proof-based problems. See past problems here.

Team USA is looking for 6th graders and below with AIME qualification or AMC 8 DHR (or equivalent), and for 9th graders and below with JMO or Mathcounts Nationals qualification. If you think you meet said criteria, fill out the initial form here.

Here are a couple quick links for further information:
[list=disc]
[*] Dr. Tao Hong's website, which contains a detailed recap of the 2024 competition (and previous years'), as well as Team USA's historical results. (You may recognize a couple names... @channing421 @vrondoS et al.: back me up here :P)
[*] My journal, which gives an insider's perspective on the camp :ninja:
[/list]
54 replies
peace09
Aug 13, 2024
profhong
Mar 18, 2025
Apply for Team USA at the International Math Competition (IMC)!
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peace09
5416 posts
#1 • 27 Y
Y by drhong, galaxy_kitty, Chaiataops, dolphinday, GeoKing, ihatemath123, coolbluealan, bjump, Mathkiddie, gumballtreetopper, zhoujef000, jjljl1121, SparkyMathShark, numbertheory97, Sedro, vrondoS, centslordm, dragonwarrior20, megarnie, OronSH, impromptuA, Yiyj1, MathJams, Rounak_iitr, bronzetruck2016, ApraTrip, jkim0656
The International Math Competition (IMC) is essentially the elementary and middle school equivalent of the IMO, with individual and team rounds featuring both short-answer and proof-based problems. See past problems here.

Team USA is looking for 6th graders and below with AIME qualification or AMC 8 DHR (or equivalent), and for 9th graders and below with JMO or Mathcounts Nationals qualification. If you think you meet said criteria, fill out the initial form here.

Here are a couple quick links for further information:
This post has been edited 1 time. Last edited by peace09, Aug 13, 2024, 2:41 PM
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KevinChen_Yay
207 posts
#2
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Hmm as a rising 9th grader, can I participate? Because it says elementary and middle school but it also says 9th grade or below...
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peace09
5416 posts
#3 • 1 Y
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KevinChen_Yay wrote:
Hmm as a rising 9th grader, can I participate? Because it says elementary and middle school but it also says 9th grade or below...
Yes, you can. For many countries other than the US, elementary school goes up to 6th, and middle school up to 9th.
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Ruegerbyrd
1034 posts
#4
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Is this online or in-person
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peace09
5416 posts
#5 • 1 Y
Y by Ruegerbyrd
Ruegerbyrd wrote:
Is this online or in-person
As specified in the website, Team USA has been meeting in person in Charlotte, NC since 2023, and is hoping to attend the competition at the international site in 2025.
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MathWizard10
1434 posts
#6
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Filling out the form rn
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WhiteFlamingo16
436 posts
#7
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peace09 wrote:
Ruegerbyrd wrote:
Is this online or in-person
As specified in the website, Team USA has been meeting in person in Charlotte, NC since 2023, and is hoping to attend the competition at the international site in 2025.

hmmmmmmmmmm my home town Charlotte
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joshualiu315
2513 posts
#8
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filled out form :)
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dbnl
3371 posts
#9
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oop time for 9th grade jmo ig
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KevinChen_Yay
207 posts
#10
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peace09 wrote:
KevinChen_Yay wrote:
Hmm as a rising 9th grader, can I participate? Because it says elementary and middle school but it also says 9th grade or below...
Yes, you can. For many countries other than the US, elementary school goes up to 6th, and middle school up to 9th.

Alright, thanks!
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KevinChen_Yay
207 posts
#11
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Filled out the form :)
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Marcus_Zhang
953 posts
#12
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Heard about this from otis excerpts.

Just curious, how many countries participate?
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peace09
5416 posts
#13
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Marcus_Zhang wrote:
Heard about this from otis excerpts.

Just curious, how many countries participate?
I don't know that off the top of my head; you are welcome to count for yourself :)
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ethanzhang1001
1060 posts
#14
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how much were you paid to make this

time to jmo qual next year even though still havent aime qualed :D :coolspeak:
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numbertheory97
39 posts
#15 • 2 Y
Y by peace09, Marcus_Zhang
Marcus_Zhang wrote:
Heard about this from otis excerpts.

Just curious, how many countries participate?
I think the contest mentioned in the OTIS excerpts (as well as some other sources) is an unrelated undergraduate competition with the exact same name, also IMC. As far as I know this IMC is less heard of than the undergraduate one.
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