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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 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
1 viewing
jlacosta
Apr 2, 2025
0 replies
Aime2001ii problem 15 question
Rook567   0
42 minutes ago
The solution claims points A and E are symmetric:
remove 6 (three isosceles triangles with equal sides =2) from the outer surface area of the block (side=8) to account for the hole at vertex E, so you also remove 6 to account for the hole at A. But the
Hole at A has a different shape: it cuts out three kites with sides 1 and sqrt5 if my calculation is correct which gives missing area of 4.5, not 6.
If this is right it would not agree with the format of the answer due to the fraction. Any comments?
0 replies
Rook567
42 minutes ago
0 replies
Discuss the Stanford Math Tournament Here
Aaronjudgeisgoat   208
N 44 minutes ago by MathPerson12321
I believe discussion is allowed after yesterday at midnight, correct?
If so, I will put tentative answers on this thread.
By the way, does anyone know the answer to Geometry Problem 5? I was wondering if I got that one right
Also, if you put answers, please put it in a hide tag

Answers for the Algebra Subject Test
Estimated Algebra Cutoffs
Answers for the Geometry Subject Test
Estimated Geo Cutoffs
Answers for the Discrete Subject Test
Estimated Cutoffs for Discrete
Answers for the Team Round
Guts Answers
208 replies
Aaronjudgeisgoat
Yesterday at 1:44 PM
MathPerson12321
44 minutes ago
what the yap
KevinYang2.71   29
N 3 hours ago by Mathgloggers
Source: USAMO 2025/3
Alice the architect and Bob the builder play a game. First, Alice chooses two points $P$ and $Q$ in the plane and a subset $\mathcal{S}$ of the plane, which are announced to Bob. Next, Bob marks infinitely many points in the plane, designating each a city. He may not place two cities within distance at most one unit of each other, and no three cities he places may be collinear. Finally, roads are constructed between the cities as follows: for each pair $A,\,B$ of cities, they are connected with a road along the line segment $AB$ if and only if the following condition holds:
[center]For every city $C$ distinct from $A$ and $B$, there exists $R\in\mathcal{S}$ such[/center]
[center]that $\triangle PQR$ is directly similar to either $\triangle ABC$ or $\triangle BAC$.[/center]
Alice wins the game if (i) the resulting roads allow for travel between any pair of cities via a finite sequence of roads and (ii) no two roads cross. Otherwise, Bob wins. Determine, with proof, which player has a winning strategy.

Note: $\triangle UVW$ is directly similar to $\triangle XYZ$ if there exists a sequence of rotations, translations, and dilations sending $U$ to $X$, $V$ to $Y$, and $W$ to $Z$.
29 replies
+1 w
KevinYang2.71
Mar 20, 2025
Mathgloggers
3 hours ago
Help for a friend
mathkidAP   8
N 4 hours ago by Andyluo
So i have a friend who is smart, but like school smart ig. Does anyone have a good way for him to make aime (he isnt interested in olympiads. He's in 8th grade and has never done competition math. Should he do amc 10 or 12? Also any other tips for him?
8 replies
mathkidAP
Yesterday at 12:24 AM
Andyluo
4 hours ago
No more topics!
Northeastern WOOTers Mock AIME I
ahaanomegas   186
N Nov 25, 2023 by parmenides51
Source: ahaanomegas, codyj, djmathman, yugrey
The title says it all: four 2013-14 WOOTers, all in the Northeastern USA area, namely codyj, djmathman, yugrey, and myself have decided to write a Mock AIME in prep for the AIME I coming up next month. You must signup in this thread to participate, since submissions will be via form and to keep identification security, we will send you passwords before the contest is released.

I will be running the tournament, grading submissions, etc. I thought of this yesterday so we aren't done writing problems, but we expect them to be released next week. Please copy the signup list already existent and add your name.

Note: We may do a Mock AIME II depending on the interest in this one.

Final Signups List
186 replies
ahaanomegas
Feb 13, 2014
parmenides51
Nov 25, 2023
Northeastern WOOTers Mock AIME I
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Source: ahaanomegas, codyj, djmathman, yugrey
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ahaanomegas
6294 posts
#1 • 12 Y
Y by cheese1000, Diehard, Quadratic64, mathman523, lucylai, Tan, AkshajK, droid347, megarnie, parmenides51, Adventure10, Mango247
The title says it all: four 2013-14 WOOTers, all in the Northeastern USA area, namely codyj, djmathman, yugrey, and myself have decided to write a Mock AIME in prep for the AIME I coming up next month. You must signup in this thread to participate, since submissions will be via form and to keep identification security, we will send you passwords before the contest is released.

I will be running the tournament, grading submissions, etc. I thought of this yesterday so we aren't done writing problems, but we expect them to be released next week. Please copy the signup list already existent and add your name.

Note: We may do a Mock AIME II depending on the interest in this one.

Final Signups List
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Diehard
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forthegreatergood
2739 posts
#3 • 2 Y
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Thanks ahaan, cody dj, and yugrey!

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sharon813
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(sorry, idk how to thread)
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sharon813
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revised

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noobynoob
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forthegreatergood wrote:
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