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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
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rrusczyk
Mar 24, 2025
SmartGroot
Mar 26, 2025
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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]
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0 replies
jlacosta
Mar 2, 2025
0 replies
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USAMO Scores Release Date
CrunchyCucumber   0
an hour ago
Does anyone know when individual scores, and medal+MOP cutoffs on the USAMO will be officially released? The website says 2-3 weeks, but I’ve heard it takes much longer in previous year.
0 replies
CrunchyCucumber
an hour ago
0 replies
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Berkeley mini Math Tournament Solutions Released
BerkeleyMathTournament   5
N an hour ago by fake123
BmMT Solutions Leaked :oops_sign: https://berkeley.mt/relaysolutions
5 replies
BerkeleyMathTournament
3 hours ago
fake123
an hour ago
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CMIMC 2025
Allen31415   4
N an hour ago by vincentwant
Hi everyone,

CMIMC's annual math competition will take place on March 15, 2025. Registration is now open, and there is no registration fee, so make sure to sign up! Please see the flyer below for details. Email us at cmimc.info@gmail.com, or put any questions in this thread.
4 replies
Allen31415
Nov 21, 2024
vincentwant
an hour ago
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Inequalities (Please help me!!!)
yt12   6
N 3 hours ago by lamhihi1234
Let $a,b,c$ be reals with $a+b+c=1$and $ a,b,c \ge \frac{-3}{ 4}$. Prove that
$$\frac{a}{a^2+1}+\frac{b}{b^2+1}+\frac{c}{ c^2+1} \le \frac{9}{ 10}$$
6 replies
yt12
Mar 4, 2023
lamhihi1234
3 hours ago
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geometry incentre config
Tony_stark0094   0
3 hours ago
In a triangle $\Delta ABC$ $I$ is the incentre and point $F$ is defined such that $F \in AC$ and $F \in \odot BIC$
prove that $AI$ is the perpendicular bisector of $BF$
0 replies
Tony_stark0094
3 hours ago
0 replies
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Inequalities
sqing   0
4 hours ago
Let $ a, b,c\geq 0 $ and $ 2a+3b+ 4c=11.$ Prove that
$$a+ab+abc\leq\frac{49}{6}$$Let $ a, b,c\geq 0 $ and $ 2a+3b+ 4c=10.$ Prove that
$$a+ab+abc\leq\frac{169}{24}$$Let $ a, b,c\geq 0 $ and $ 2a+3b+ 4c=14.$ Prove that
$$a+ab+abc\leq\frac{63+5\sqrt 5}{6}$$Let $ a, b,c\geq 0 $ and $ 2a+3b+ 4c=32.$ Prove that
$$a+ab+abc\leq48+\frac{64\sqrt{2}}{3}$$
0 replies
sqing
4 hours ago
0 replies
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Square Root Equality
djmathman   67
N 4 hours ago by vincentwant
Source: 2013 USAJMO #6/USAMO #4
Find all real numbers $x,y,z\geq 1$ satisfying \[\min(\sqrt{x+xyz},\sqrt{y+xyz},\sqrt{z+xyz})=\sqrt{x-1}+\sqrt{y-1}+\sqrt{z-1}.\]
67 replies
djmathman
May 1, 2013
vincentwant
4 hours ago
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Inequalites 1/4
nhathhuyyp5c   1
N Today at 12:27 PM by sqing
Let $a,b,c,d$ be non-negative reals such that $a+b+c+d=3$. Prove that $$a+ab+abc+abcd\leq 4$$
1 reply
nhathhuyyp5c
Today at 6:10 AM
sqing
Today at 12:27 PM
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combionatrics question
Tony_stark0094   1
N Today at 12:08 PM by Tony_stark0094
There are $2n$ people seated around a circular table, and $m$ cookies
are distributed among them. The cookies can be passed under the
following rules:
(a) Each person can only pass cookies to his or her neighbors
(b) Each time someone passes a cookie, he or she must also eat a
cookie
Let $A$ be one of these people. Find the least $m$ such that no matter
how $m$ cookies are distributed initially, there is a strategy to pass
cookies so that $A$ receives at least one cookie.
1 reply
Tony_stark0094
Today at 12:08 PM
Tony_stark0094
Today at 12:08 PM
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Functional Equation
ab_xy123   4
N Today at 10:35 AM by millennium2k
Find all solutions to the functional equation $f(1-x) = f(x) + 1 - 2x$
4 replies
ab_xy123
Mar 16, 2020
millennium2k
Today at 10:35 AM
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ez problem
Noname23   2
N Today at 10:27 AM by lbh_qys
Find $x$
$7 + \sqrt7 + 2\sqrt{x + 4} + \sqrt{7x + 28} + \sqrt{14x + 7} + \sqrt{2x^2 + 9x + 4} - \sqrt{2x + 1} = 0$
2 replies
Noname23
Today at 6:14 AM
lbh_qys
Today at 10:27 AM
J
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An inequality with two equality cases
JK1603JK   1
N Today at 10:23 AM by lbh_qys
Let a,b,c\ge 0: a+b+c>0 then prove \frac{b+c-2a}{2a+b+c}+\frac{c+a-2b}{2b+c+a}+\frac{a+b-2c}{2c+a+b}\ge \frac{4(a^2+b^2+c^2-ab-bc-ca)}{5(a^{2}+b^{2}+c^{2})+6(ab+bc+ca)}
1 reply
JK1603JK
Today at 8:14 AM
lbh_qys
Today at 10:23 AM
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Inequality
lbh_qys   1
N Today at 9:52 AM by lbh_qys
Let \(a,b,c \geq 0\) and \(5(a^2+b^2+c^2)-3(a+b+c)+2abc\leq 8\). Prove that \(a^3+b^3+c^3+2abc\leq 5\).
1 reply
lbh_qys
Mar 28, 2025
lbh_qys
Today at 9:52 AM
J
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An inequality
JK1603JK   3
N Today at 9:22 AM by lbh_qys
Let a,b,c\ge 0: ab+bc+ca>0 then prove \frac{4ab+5c^2}{a+b}+\frac{4bc+5a^2}{b+c}+\frac{4ca+5b^2}{c+a}\ge \frac{3}{2}\cdot\frac{(a+b+c)^3}{ab+bc+ca}.
3 replies
JK1603JK
Yesterday at 7:11 AM
lbh_qys
Today at 9:22 AM
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Why did my account set back to bronze?
Wisteriaaa   2
N Mar 29, 2025 by ethan2011
Hey, guys! I passed bronze division in Feb 2024 and silver in Jan 2025, but then I found I only could enter bronze division in Feb. What's going wrong with my account? :wacko:
2 replies
Wisteriaaa
Mar 29, 2025
ethan2011
Mar 29, 2025
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Why did my account set back to bronze?
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Reveal topic tags
Usaco
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Wisteriaaa
1 post
Wisteriaaa
#1 h  Mar 29, 2025, 3:02 AM
Y by
Hey, guys! I passed bronze division in Feb 2024 and silver in Jan 2025, but then I found I only could enter bronze division in Feb. What's going wrong with my account? :wacko:
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exp-ipi-1
1075 posts
exp-ipi-1
#2 h  Mar 29, 2025, 3:08 AM
Y by
perhaps you might be cooked
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ethan2011
248 posts
ethan2011
#3 h  Mar 29, 2025, 3:10 AM
Y by
Wisteriaaa wrote:
Hey, guys! I passed bronze division in Feb 2024 and silver in Jan 2025, but then I found I only could enter bronze division in Feb. What's going wrong with my account? :wacko:

Maybe you should send an email to them?
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