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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 May Highlights and 2025 AoPS Online Class Information
jlacosta   0
May 1, 2025
May is an exciting month! National MATHCOUNTS is the second week of May in Washington D.C. and our Founder, Richard Rusczyk will be presenting a seminar, Preparing Strong Math Students for College and Careers, on May 11th.

Are you interested in working towards MATHCOUNTS and don’t know where to start? We have you covered! If you have taken Prealgebra, then you are ready for MATHCOUNTS/AMC 8 Basics. Already aiming for State or National MATHCOUNTS and harder AMC 8 problems? Then our MATHCOUNTS/AMC 8 Advanced course is for you.

Summer camps are starting next month at the Virtual Campus in math and language arts that are 2 - to 4 - weeks in duration. Spaces are still available - don’t miss your chance to have an enriching summer experience. There are middle and high school competition math camps as well as Math Beasts camps that review key topics coupled with fun explorations covering areas such as graph theory (Math Beasts Camp 6), cryptography (Math Beasts Camp 7-8), and topology (Math Beasts Camp 8-9)!

Be sure to mark your calendars for the following upcoming events:
[list][*]May 9th, 4:30pm PT/7:30pm ET, Casework 2: Overwhelming Evidence — A Text Adventure, a game where participants will work together to navigate the map, solve puzzles, and win! All are welcome.
[*]May 19th, 4:30pm PT/7:30pm ET, What's Next After Beast Academy?, designed for students finishing Beast Academy and ready for Prealgebra 1.
[*]May 20th, 4:00pm PT/7:00pm ET, Mathcamp 2025 Qualifying Quiz Part 1 Math Jam, Problems 1 to 4, join the Canada/USA Mathcamp staff for this exciting Math Jam, where they discuss solutions to Problems 1 to 4 of the 2025 Mathcamp Qualifying Quiz!
[*]May 21st, 4:00pm PT/7:00pm ET, Mathcamp 2025 Qualifying Quiz Part 2 Math Jam, Problems 5 and 6, Canada/USA Mathcamp staff will discuss solutions to Problems 5 and 6 of the 2025 Mathcamp Qualifying Quiz![/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
May 1, 2025
0 replies
Past USAMO Medals
sdpandit   1
N 35 minutes ago by CatCatHead
Does anyone know where to find lists of USAMO medalists from past years? I can find the 2025 list on their website, but they don't seem to keep lists from previous years and I can't find it anywhere else. Thanks!
1 reply
sdpandit
Thursday at 7:44 PM
CatCatHead
35 minutes ago
An FE. Who woulda thunk it?
nikenissan   116
N 4 hours ago by anudeep
Source: 2021 USAJMO Problem 1
Let $\mathbb{N}$ denote the set of positive integers. Find all functions $f : \mathbb{N} \rightarrow \mathbb{N}$ such that for positive integers $a$ and $b,$ \[f(a^2 + b^2) = f(a)f(b) \text{ and } f(a^2) = f(a)^2.\]
116 replies
nikenissan
Apr 15, 2021
anudeep
4 hours ago
usamOOK geometry
KevinYang2.71   106
N Yesterday at 11:54 PM by jasperE3
Source: USAMO 2025/4, USAJMO 2025/5
Let $H$ be the orthocenter of acute triangle $ABC$, let $F$ be the foot of the altitude from $C$ to $AB$, and let $P$ be the reflection of $H$ across $BC$. Suppose that the circumcircle of triangle $AFP$ intersects line $BC$ at two distinct points $X$ and $Y$. Prove that $C$ is the midpoint of $XY$.
106 replies
KevinYang2.71
Mar 21, 2025
jasperE3
Yesterday at 11:54 PM
Geo #3 EQuals FReak out
Th3Numb3rThr33   106
N Yesterday at 10:56 PM by BS2012
Source: 2018 USAJMO #3
Let $ABCD$ be a quadrilateral inscribed in circle $\omega$ with $\overline{AC} \perp \overline{BD}$. Let $E$ and $F$ be the reflections of $D$ over lines $BA$ and $BC$, respectively, and let $P$ be the intersection of lines $BD$ and $EF$. Suppose that the circumcircle of $\triangle EPD$ meets $\omega$ at $D$ and $Q$, and the circumcircle of $\triangle FPD$ meets $\omega$ at $D$ and $R$. Show that $EQ = FR$.
106 replies
Th3Numb3rThr33
Apr 18, 2018
BS2012
Yesterday at 10:56 PM
No more topics!
Predicted AMC 8 Scores
megahertz13   167
N Apr 22, 2025 by KF329
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
megahertz13 & 5 & 23 \\
\end{tabular}$
167 replies
megahertz13
Jan 25, 2024
KF329
Apr 22, 2025
Predicted AMC 8 Scores
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megahertz13
3183 posts
#1 • 7 Y
Y by DU4532, Spiritpalm, WiseTigerJ1, mathermarcus, ehuseyinyigit, cubres, jkim0656
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
megahertz13 & 5 & 23 \\
\end{tabular}$
This post has been edited 1 time. Last edited by AoPSSheriff, Jan 25, 2024, 5:12 PM
Reason: No advertising.
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ChuMath
289 posts
#2 • 2 Y
Y by WiseTigerJ1, cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
megahertz13 & 5 & 23 \\
ChuMath & 6 & 16 \\
\end{tabular}$
This post has been edited 1 time. Last edited by ChuMath, Jan 30, 2024, 6:22 PM
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derekwang2048
1225 posts
#3 • 3 Y
Y by herbs_li, WiseTigerJ1, cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20
\end{tabular}$
I sillied a lot
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fruitmonster97
2492 posts
#4 • 2 Y
Y by WiseTigerJ1, cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
fruitmonster97 & \text{no} & 21
\end{tabular}$
I got my score back, and big sad happened :mad: ugh I got a 23 two years ago too
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megahertz13
3183 posts
#5 • 2 Y
Y by WiseTigerJ1, cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
\end{tabular}$
Restored :)

@derekwang, you are also in 5th?
This post has been edited 1 time. Last edited by megahertz13, Jan 25, 2024, 4:48 PM
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derekwang2048
1225 posts
#6 • 2 Y
Y by WiseTigerJ1, cubres
yup :D $~~~~~~~$
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megarnie
5606 posts
#7 • 7 Y
Y by GrantStar, OronSH, megahertz13, EpicBird08, WiseTigerJ1, cubres, jkim0656
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
\end{tabular}$

solved p3 with vp + mod stuf and thats it
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zhenghua
1069 posts
#8 • 2 Y
Y by WiseTigerJ1, cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
\end{tabular}$
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bpan2021
2637 posts
#9 • 1 Y
Y by cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
bpan2021 & 8 & 23 \\
\end{tabular}$
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zhoujef000
316 posts
#10 • 1 Y
Y by cubres
oop
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
bpan2021 & 8 & 23 \\
zhoujef000& 8& 24(not confirmed) \\
\end{tabular}$
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c_double_sharp
314 posts
#11 • 1 Y
Y by cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
bpan2021 & 8 & 23 \\
zhoujef000& 8& 24(not confirmed) \\
c double sharp & 7 & 21 \\
\end{tabular}$
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PearlPython22MZ
29 posts
#12 • 1 Y
Y by cubres
c_double_sharp wrote:
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
PearlPython22mz & 4 & 17 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
bpan2021 & 8 & 23 \\
zhoujef000& 8& 24(not confirmed) \\
c double sharp & 7 & 21 \\
\end{tabular}$
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KevinYang2.71
427 posts
#13 • 1 Y
Y by cubres
$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
PearlPython22mz & 4 & 17 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
bpan2021 & 8 & 23 \\
zhoujef000& 8& 24(not confirmed) \\
c double sharp & 7 & 21 \\
KevinYang2.71 & 1 & 14.34
\end{tabular}$
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aaaaaaaabbbb
148 posts
#14 • 1 Y
Y by cubres
My son forgot most of his answers so not so sure about score.


$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
PearlPython22mz & 4 & 17 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
bpan2021 & 8 & 23 \\
zhoujef000& 8& 24(not confirmed) \\
c double sharp & 7 & 21 \\
KevinYang2.71 & 1 & 14.34 \\
AAAAAAAABBBB & 1 & 9 (actual score)
\end{tabular}$
This post has been edited 3 times. Last edited by aaaaaaaabbbb, Jan 27, 2024, 3:49 AM
Reason: update actual score
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ethanzhang1001
1060 posts
#15 • 1 Y
Y by cubres
removed joke post

$\begin{tabular}{c|c|c|c}Username & Grade & AMC8 Score \\ \hline
zhenghua & 8 & 24 \\
megahertz13 & 5 & 23 \\
ChuMath & 6 & 17 \\
derekwang2048 & 5 & 20 \\
dbnl & 7 & 24 \\
ethanzhang1001 & 8 & 23 \\
MathPerson12321 & 8 & 21 \\
PearlPython22mz & 4 & 17 \\
b2025tyx & 7 & 16 or smth \\
ultimatehero & 6 & 25 \\
joshualiu315 & 8 & 24 \\
fruitmonster97 & no & 21\\
megarnie & 9 & 1 \\
bpan2021 & 8 & 23 \\
zhoujef000& 8& 24(not confirmed) \\
c double sharp & 7 & 21 \\
AAAAAAAABBBB & 1 & 7-13
\end{tabular}$
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