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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
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[MAIN ROUND STARTS MAY 17] OMMC Year 5
DottedCaculator   49
N 26 minutes ago by idk12345678
Hello to all creative problem solvers,

Do you want to work on a fun, untimed team math competition with amazing questions by MOPpers and IMO & EGMO medalists? $\phantom{You lost the game.}$
Do you want to have a chance to win thousands in cash and raffle prizes (no matter your skill level)?

Check out the fifth annual iteration of the

Online Monmouth Math Competition!

Online Monmouth Math Competition, or OMMC, is a 501c3 accredited nonprofit organization managed by adults, college students, and high schoolers which aims to give talented high school and middle school students an exciting way to develop their skills in mathematics.

Our website: https://www.ommcofficial.org/
Our Discord (6000+ members): https://tinyurl.com/joinommc
Test portal: https://ommc-test-portal.vercel.app/

This is not a local competition; any student 18 or younger anywhere in the world can attend. We have changed some elements of our contest format, so read carefully and thoroughly. Join our Discord or monitor this thread for updates and test releases.

How hard is it?

We plan to raffle out a TON of prizes over all competitors regardless of performance. So just submit: a few minutes of your time will give you a great chance to win amazing prizes!

How are the problems?

You can check out our past problems and sample problems here:
https://www.ommcofficial.org/sample
https://www.ommcofficial.org/2022-documents
https://www.ommcofficial.org/2023-documents
https://www.ommcofficial.org/ommc-amc

How will the test be held?/How do I sign up?

Solo teams?

Test Policy

Timeline:
Main Round: May 17th - May 24th
Test Portal Released. The Main Round of the contest is held. The Main Round consists of 25 questions that each have a numerical answer. Teams will have the entire time interval to work on the questions. They can submit any time during the interval. Teams are free to edit their submissions before the period ends, even after they submit.

Final Round: May 26th - May 28th
The top placing teams will qualify for this invitational round (5-10 questions). The final round consists of 5-10 proof questions. Teams again will have the entire time interval to work on these questions and can submit their proofs any time during this interval. Teams are free to edit their submissions before the period ends, even after they submit.

Conclusion of Competition: Early June
Solutions will be released, winners announced, and prizes sent out to winners.

Scoring:

Prizes:

I have more questions. Whom do I ask?

We hope for your participation, and good luck!

OMMC staff

OMMC’S 2025 EVENTS ARE SPONSORED BY:

[list]
[*]Nontrivial Fellowship
[*]Citadel
[*]SPARC
[*]Jane Street
[*]And counting!
[/list]

49 replies
DottedCaculator
Apr 26, 2025
idk12345678
26 minutes ago
J
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Goals for 2025-2026
Airbus320-214   120
N 30 minutes ago by Schintalpati
Please write down your goal/goals for competitions here for 2025-2026.
120 replies
Airbus320-214
May 11, 2025
Schintalpati
30 minutes ago
J
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HCSSiM results
SurvivingInEnglish   70
N 4 hours ago by math_on_top
Anyone already got results for HCSSiM? Are there any point in sending additional work if I applied on March 19?
70 replies
SurvivingInEnglish
Apr 5, 2024
math_on_top
4 hours ago
J
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camp/class recommendations for incoming freshman
walterboro   8
N 6 hours ago by lu1376091
hi guys, i'm about to be an incoming freshman, does anyone have recommendations for classes to take next year and camps this summer? i am sure that i can aime qual but not jmo qual yet. ty
8 replies
walterboro
May 10, 2025
lu1376091
6 hours ago
J
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Inequalities
nhathhuyyp5c   2
N Yesterday at 4:11 PM by alexheinis
Let $x,y$ be positive reals such that $3x-2xy\leq 1$. Find $\min$ \[ M = \frac{1 - x^2}{x^2} + 2y^2 + 3x + \frac{24}{y} + 2025. \]

2 replies
nhathhuyyp5c
Yesterday at 3:31 PM
alexheinis
Yesterday at 4:11 PM
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Inequalities
sqing   2
N Yesterday at 3:29 PM by sqing
Let $ a,b>0 $ . Prove that
$$ \frac{a}{a^2+a +2b+1}+ \frac{b}{b^2+2a +b+1} \leq \frac{2}{5} $$$$ \frac{a}{a^2+2a +b+1}+ \frac{b}{b^2+a +2b+1} \leq \frac{2}{5} $$
2 replies
sqing
Yesterday at 4:01 AM
sqing
Yesterday at 3:29 PM
J
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dirichlet
spiralman   1
N Yesterday at 3:02 PM by clarkculus
Let n be a positive integer. Consider 2n+1 distinct positive integers whose total sum is less than (n+1)(3n+1). Prove that among these 2n+1 numbers, there exist two numbers whose sum is 2n+1.
1 reply
spiralman
Monday at 9:36 AM
clarkculus
Yesterday at 3:02 PM
J
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Graphs and Trig
Math1331Math   1
N Yesterday at 12:18 PM by Mathzeus1024
The graph of the function $f(x)=\sin^{-1}(2\sin{x})$ consists of the union of disjoint pieces. Compute the distance between the endpoints of any one piece
1 reply
Math1331Math
Jun 19, 2016
Mathzeus1024
Yesterday at 12:18 PM
J
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Inequalities
sqing   1
N Yesterday at 11:55 AM by sqing
Let $a,b,c >2 $ and $ ab+bc+ca \leq 75.$ Show that
$$\frac{1}{a-2}+\frac{1}{b-2}+\frac{1}{c-2}\geq 1$$Let $a,b,c >2 $ and $ \frac{1}{a}+\frac{1}{b}+\frac{1}{c}\geq \frac{6}{7}.$ Show that
$$\frac{1}{a-2}+\frac{1}{b-2}+\frac{1}{c-2}\geq 2$$
1 reply
sqing
Yesterday at 11:31 AM
sqing
Yesterday at 11:55 AM
J
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CSMC Question
vicrong   1
N Yesterday at 11:47 AM by Mathzeus1024
Prove that there is exactly one function h with the following properties

- the domain of h is the set of positive integers
- h(n) is a positive integer for every positive integer n, and
- h(h(n)+m) = 1+n+h(m) for all positive integers n and m
1 reply
vicrong
Nov 26, 2017
Mathzeus1024
Yesterday at 11:47 AM
J
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Inequalities
sqing   5
N Yesterday at 11:23 AM by sqing
Let $a,b,c >1 $ and $ \frac{1}{a-1}+\frac{1}{b-1}+\frac{1}{c-1}=1.$ Show that$$ab+bc+ca \geq 48$$$$\frac{1}{a}+\frac{1}{b}+\frac{1}{c}\leq \frac{3}{4}$$Let $a,b,c >1 $ and $ \frac{1}{a-1}+\frac{1}{b-1}+\frac{1}{c-1}=2.$ Show that$$ab+bc+ca \geq \frac{75}{4}$$$$\frac{1}{a}+\frac{1}{b}+\frac{1}{c}\leq \frac{6}{5}$$Let $a,b,c >1 $ and $ \frac{1}{a-1}+\frac{1}{b-1}+\frac{1}{c-1}=3.$ Show that$$ab+bc+ca \geq 12$$$$\frac{1}{a}+\frac{1}{b}+\frac{1}{c}\leq \frac{3}{2}$$
5 replies
sqing
Yesterday at 9:04 AM
sqing
Yesterday at 11:23 AM
J
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function
khyeon   1
N Yesterday at 11:16 AM by Mathzeus1024
Find the range of $m$ so that any two different points in the graph of the quadratic function $y=2x^2+\frac{1}{4}$ are not symmetrical to the straight line $y=m(x+2)$
1 reply
khyeon
Sep 10, 2017
Mathzeus1024
Yesterday at 11:16 AM
J
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Find function
trito11   1
N Yesterday at 10:00 AM by Mathzeus1024
Find $f:\mathbb{R^+} \to \mathbb{R^+} $ such that
i) f(x)>f(y) $\forall$ x>y>0
ii) f(2x)$\ge$2f(x)$\forall$x>0
iii)$f(f(x)f(y)+x)=f(xf(y))+f(x)$$\forall$x,y>0
1 reply
trito11
Nov 11, 2019
Mathzeus1024
Yesterday at 10:00 AM
J
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The centroid of ABC lies on ME [2023 Abel, Problem 1b]
Amir Hossein   2
N Yesterday at 8:56 AM by MITDragon
In the triangle $ABC$, points $D$ and $E$ lie on the side $BC$, with $CE = BD$. Also, $M$ is the midpoint of $AD$. Show that the centroid of $ABC$ lies on $ME$.
2 replies
Amir Hossein
Mar 12, 2024
MITDragon
Yesterday at 8:56 AM
J
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J
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Question about AMC 10/12 and AIME book
ConfidentKoala4   3
N Apr 25, 2025 by smbellanki
Hi,
I was wondering if the following book is worth going through. It has A LOT of problems and i dont want to waste time if there are better resources. Does anyone know something about this, and can comment?
Thanks
https://www.omegalearn.org/mastering-amc1012
3 replies
ConfidentKoala4
Apr 25, 2025
smbellanki
Apr 25, 2025
J
Question about AMC 10/12 and AIME book
G H J
Reveal topic tags
AMC
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G H BBookmark kLocked kLocked NReply
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ConfidentKoala4
611 posts
ConfidentKoala4
#1 h  Apr 25, 2025, 12:33 AM
Y by
Hi,
I was wondering if the following book is worth going through. It has A LOT of problems and i dont want to waste time if there are better resources. Does anyone know something about this, and can comment?
Thanks
https://www.omegalearn.org/mastering-amc1012
Z K Y
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jb2015007
1954 posts
jb2015007
#2 h  Apr 25, 2025, 12:42 AM • 1 Y
Y by ConfidentKoala4
yes its worth it especially since its free it can hurt at all
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MathCosine
165 posts
MathCosine
#3 h  Apr 25, 2025, 2:20 AM
Y by
Honestly I would just do the AoPS books if I were you. But I guess you could try it…
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smbellanki
181 posts
smbellanki
#4 h  Apr 25, 2025, 2:47 AM
Y by
I did it a long time ago, and while I didn't listen I worked through the problems which helped.
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