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k a April Highlights and 2025 AoPS Online Class Information
jlacosta   0
Apr 2, 2025
Spring is in full swing and summer is right around the corner, what are your plans? At AoPS Online our schedule has new classes starting now through July, so be sure to keep your skills sharp and be prepared for the Fall school year! Check out the schedule of upcoming classes below.

WOOT early bird pricing is in effect, don’t miss out! If you took MathWOOT Level 2 last year, no worries, it is all new problems this year! Our Worldwide Online Olympiad Training program is for high school level competitors. AoPS designed these courses to help our top students get the deep focus they need to succeed in their specific competition goals. Check out the details at this link for all our WOOT programs in math, computer science, chemistry, and physics.

Looking for summer camps in math and language arts? Be sure to check out the video-based summer camps offered at the Virtual Campus that are 2- to 4-weeks in duration. 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 events:
[list][*]April 3rd (Webinar), 4pm PT/7:00pm ET, Learning with AoPS: Perspectives from a Parent, Math Camp Instructor, and University Professor
[*]April 8th (Math Jam), 4:30pm PT/7:30pm ET, 2025 MATHCOUNTS State Discussion
April 9th (Webinar), 4:00pm PT/7:00pm ET, Learn about Video-based Summer Camps at the Virtual Campus
[*]April 10th (Math Jam), 4:30pm PT/7:30pm ET, 2025 MathILy and MathILy-Er Math Jam: Multibackwards Numbers
[*]April 22nd (Webinar), 4:00pm PT/7:00pm ET, Competitive Programming at AoPS (USACO).[/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
Apr 2, 2025
0 replies
J
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MOP Emails Out! (not clickbait)
Mathandski   68
N 6 minutes ago by LawofCosine
What an emotional roller coaster the past 34 days have been.

Congrats to all that qualified!
68 replies
Mathandski
Tuesday at 8:25 PM
LawofCosine
6 minutes ago
J
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have you done DCX-Russian?
GoodMorning   82
N an hour ago by EpicBird08
Source: 2023 USAJMO Problem 3
Consider an $n$-by-$n$ board of unit squares for some odd positive integer $n$. We say that a collection $C$ of identical dominoes is a maximal grid-aligned configuration on the board if $C$ consists of $(n^2-1)/2$ dominoes where each domino covers exactly two neighboring squares and the dominoes don't overlap: $C$ then covers all but one square on the board. We are allowed to slide (but not rotate) a domino on the board to cover the uncovered square, resulting in a new maximal grid-aligned configuration with another square uncovered. Let $k(C)$ be the number of distinct maximal grid-aligned configurations obtainable from $C$ by repeatedly sliding dominoes. Find the maximum value of $k(C)$ as a function of $n$.

Proposed by Holden Mui
82 replies
1 viewing
GoodMorning
Mar 23, 2023
EpicBird08
an hour ago
J
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2025 ELMOCOUNTS - Mock MATHCOUNTS Nationals
vincentwant   117
N an hour ago by aidan0626
text totally not copied over from wmc (thanks jason <3)
Quick Links:
[list=disc]
[*] National: (Sprint) (Target) (Team) (Sprint + Target Submission) (Team Submission) [/*]
[*] Miscellaneous: (Leaderboard) (Sprint + Target Private Discussion Forum) (Team Discussion Forum)[/*]
[/list]
-----
Eddison Chen (KS '22 '24), Aarush Goradia (CO '24), Ethan Imanuel (NJ '24), Benjamin Jiang (FL '23 '24), Rayoon Kim (PA '23 '24), Jason Lee (NC '23 '24), Puranjay Madupu (AZ '23 '24), Andy Mo (OH '23 '24), George Paret (FL '24), Arjun Raman (IN '24), Vincent Wang (TX '24), Channing Yang (TX '23 '24), and Jefferson Zhou (MN '23 '24) present:



[center]IMAGE[/center]

[center]Image credits to Simon Joeng.[/center]

2024 MATHCOUNTS Nationals alumni from all across the nation have come together to administer the first-ever ELMOCOUNTS Competition, a mock written by the 2024 Nationals alumni given to the 2025 Nationals participants. By providing the next generation of mathletes with free, high quality practice, we're here to boast how strong of an alumni community MATHCOUNTS has, as well as foster interest in the beautiful art that is problem writing!

The tests and their corresponding submissions forms will be released here, on this thread, on Monday, April 21, 2025. The deadline is May 10, 2025. Tests can be administered asynchronously at your home or school, and your answers should be submitted to the corresponding submission form. If you include your AoPS username in your submission, you will be granted access to the private discussion forum on AoPS, where you can discuss the tests even before the deadline.
[list=disc]
[*] "How do I know these tests are worth my time?" [/*]
[*] "Who can participate?" [/*]
[*] "How do I sign up?" [/*]
[*] "What if I have multiple students?" [/*]
[*] "What if a problem is ambiguous, incorrect, etc.?" [/*]
[*] "Will there be solutions?" [/*]
[*] "Will there be a Countdown Round administered?" [/*]
[/list]
If you have any other questions, feel free to email us at elmocounts2025@gmail.com (or PM me)!
117 replies
vincentwant
Apr 20, 2025
aidan0626
an hour ago
J
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USA(J)MO Statistics Out
BS2012   26
N an hour ago by joebub56
Source: MAA edvistas page
https://maa.edvistas.com/eduview/report.aspx?view=1561&mode=6
who were the 2 usamo perfects
26 replies
BS2012
Yesterday at 10:07 PM
joebub56
an hour ago
J
No more topics!
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k 9 Will I make AMO?
sus_rbo   5
N Apr 14, 2025 by hashbrown2009
Hi imagien_bad, I got a 11 on AIME I 2025 what is my chance to make USAMO 2025? (i did not do 12A or 12B btw)
5 replies
sus_rbo
Apr 13, 2025
hashbrown2009
Apr 14, 2025
J
Will I make AMO?
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sus_rbo
3 posts
sus_rbo
#1 h  Apr 13, 2025, 2:54 PM
Y by
9Poll:
What is my chance to make USAMO in 2025 with an 11 on AIME I?
66 Votes
15%
(10)
3%
(2)
12%
(8)
33%
(22)
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(24)
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Hi imagien_bad, I got a 11 on AIME I 2025 what is my chance to make USAMO 2025? (i did not do 12A or 12B btw)
Z Y
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maxamc
564 posts
maxamc
#2 h  Apr 13, 2025, 3:20 PM
Y by
80-100. if you can get 11 on aime, usamts qual is easy
Z Y
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ObiWanKenoblowin
12 posts
ObiWanKenoblowin
#3 h  Apr 13, 2025, 3:28 PM
Y by
69 percent orz AIME score though
Z Y
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SpeedCuber7
1819 posts
SpeedCuber7
#4 h  Apr 13, 2025, 5:42 PM
Y by
maxamc wrote:
80-100. if you can get 11 on aime, usamts qual is easy

makes sense
Z Y
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elasticwealth
339 posts
elasticwealth
#5 h  Apr 13, 2025, 11:44 PM
Y by
The % chance of qualifying is basically the % they keep usamts pathway next year.
Z Y
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hashbrown2009
185 posts
hashbrown2009
#6 h  Apr 14, 2025, 12:17 AM
Y by
If you keep up the good work, bring AIME score to like 13, then you probably can. I only put 60-80% because nothing is guranteed, and who knows if the cutoffs will be insane like this year‘s.
Z Y
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