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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 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
k i Adding contests to the Contest Collections
dcouchman   1
N Apr 5, 2023 by v_Enhance
Want to help AoPS remain a valuable Olympiad resource? Help us add contests to AoPS's Contest Collections.

Find instructions and a list of contests to add here: https://artofproblemsolving.com/community/c40244h1064480_contests_to_add
1 reply
dcouchman
Sep 9, 2019
v_Enhance
Apr 5, 2023
k i Zero tolerance
ZetaX   49
N May 4, 2019 by NoDealsHere
Source: Use your common sense! (enough is enough)
Some users don't want to learn, some other simply ignore advises.
But please follow the following guideline:


To make it short: ALWAYS USE YOUR COMMON SENSE IF POSTING!
If you don't have common sense, don't post.


More specifically:

For new threads:


a) Good, meaningful title:
The title has to say what the problem is about in best way possible.
If that title occured already, it's definitely bad. And contest names aren't good either.
That's in fact a requirement for being able to search old problems.

Examples:
Bad titles:
- "Hard"/"Medium"/"Easy" (if you find it so cool how hard/easy it is, tell it in the post and use a title that tells us the problem)
- "Number Theory" (hey guy, guess why this forum's named that way¿ and is it the only such problem on earth¿)
- "Fibonacci" (there are millions of Fibonacci problems out there, all posted and named the same...)
- "Chinese TST 2003" (does this say anything about the problem¿)
Good titles:
- "On divisors of a³+2b³+4c³-6abc"
- "Number of solutions to x²+y²=6z²"
- "Fibonacci numbers are never squares"


b) Use search function:
Before posting a "new" problem spend at least two, better five, minutes to look if this problem was posted before. If it was, don't repost it. If you have anything important to say on topic, post it in one of the older threads.
If the thread is locked cause of this, use search function.

Update (by Amir Hossein). The best way to search for two keywords in AoPS is to input
[code]+"first keyword" +"second keyword"[/code]
so that any post containing both strings "first word" and "second form".


c) Good problem statement:
Some recent really bad post was:
[quote]$lim_{n\to 1}^{+\infty}\frac{1}{n}-lnn$[/quote]
It contains no question and no answer.
If you do this, too, you are on the best way to get your thread deleted. Write everything clearly, define where your variables come from (and define the "natural" numbers if used). Additionally read your post at least twice before submitting. After you sent it, read it again and use the Edit-Button if necessary to correct errors.


For answers to already existing threads:


d) Of any interest and with content:
Don't post things that are more trivial than completely obvious. For example, if the question is to solve $x^{3}+y^{3}=z^{3}$, do not answer with "$x=y=z=0$ is a solution" only. Either you post any kind of proof or at least something unexpected (like "$x=1337, y=481, z=42$ is the smallest solution). Someone that does not see that $x=y=z=0$ is a solution of the above without your post is completely wrong here, this is an IMO-level forum.
Similar, posting "I have solved this problem" but not posting anything else is not welcome; it even looks that you just want to show off what a genius you are.

e) Well written and checked answers:
Like c) for new threads, check your solutions at least twice for mistakes. And after sending, read it again and use the Edit-Button if necessary to correct errors.



To repeat it: ALWAYS USE YOUR COMMON SENSE IF POSTING!


Everything definitely out of range of common sense will be locked or deleted (exept for new users having less than about 42 posts, they are newbies and need/get some time to learn).

The above rules will be applied from next monday (5. march of 2007).
Feel free to discuss on this here.
49 replies
ZetaX
Feb 27, 2007
NoDealsHere
May 4, 2019
k i Stop looking for the "right" training
v_Enhance   50
N Oct 16, 2017 by blawho12
Source: Contest advice
EDIT 2019-02-01: https://blog.evanchen.cc/2019/01/31/math-contest-platitudes-v3/ is the updated version of this.

EDIT 2021-06-09: see also https://web.evanchen.cc/faq-contest.html.

Original 2013 post
50 replies
v_Enhance
Feb 15, 2013
blawho12
Oct 16, 2017
ros application results?
cowstalker   4
N 6 minutes ago by ericbowenli
I recently applied to ROSS and just wondering when they come out, and if they come out to everyone at the same time? I want to know what date to look forward to because of other plans that depend on whether I get in or not.

4 replies
cowstalker
Yesterday at 12:14 AM
ericbowenli
6 minutes ago
Next Steps for AIME
GeniusGiraffe   10
N 26 minutes ago by martianrunner
Hi everyone,

I am a freshmen who got a 181 index this year, with a 111 on AMC 10 and a 7 on AIME.

Now that I have around 6 months to prepare before AMC 10, what should I do to prepare? I am pretty sure I can get >130 on AMC 10 right now.
My goal is to make USA(J)MO next year and do decent on it.
10 replies
GeniusGiraffe
Today at 5:23 AM
martianrunner
26 minutes ago
Discuss the Stanford Math Tournament Here
Aaronjudgeisgoat   258
N an hour ago by alcumusftwgrind
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
258 replies
2 viewing
Aaronjudgeisgoat
Apr 14, 2025
alcumusftwgrind
an hour ago
Questions
FuturePanda   4
N an hour ago by mathprodigy2011
Hi everyone,
I have 2 questions. Could anyone help me with them?
1. How do I get good at computational? I'm pretty good with AMC/AIME/BmMT, but I'm really bad at the subject tests in college competitions. (Last year 24th place general BMT). For example, I can solve around 8-12 AIME problems, but mocking a HMMT or SMT past test from 2024 gives me 3(which is probably top lik2 25% only). How do I improve my computational skills? I have OTIS, past tests, and lots of textbooks to use. What is the most efficient way to place top 50 at these competitions?

2. What is the ranking of college comps in terms of difficulty. My personal is:
BmMT < BMT< HMMT Nov < PUMAC < SMT < HMMT Feb

I just wanna know so I know which ones to mock first.

Thanks in advance!
4 replies
1 viewing
FuturePanda
Apr 14, 2025
mathprodigy2011
an hour ago
Unusual Hexagon Geo
oVlad   2
N 4 hours ago by Double07
Source: Romania Junior TST 2025 Day 1 P4
Let $ABCDEF$ be a convex hexagon, such that the triangles $ABC$ and $DEF$ are equilateral and the diagonals $AD, BE$ and $CF$ are concurrent. Prove that $AC\parallel DF$ or $BE=AD+CF.$
2 replies
oVlad
Apr 12, 2025
Double07
4 hours ago
A drunk frog jumping ona grid in a weird way
Tintarn   5
N 4 hours ago by Tintarn
Source: Baltic Way 2024, Problem 10
A frog is located on a unit square of an infinite grid oriented according to the cardinal directions. The frog makes moves consisting of jumping either one or two squares in the direction it is facing, and then turning according to the following rules:
i) If the frog jumps one square, it then turns $90^\circ$ to the right;
ii) If the frog jumps two squares, it then turns $90^\circ$ to the left.

Is it possible for the frog to reach the square exactly $2024$ squares north of the initial square after some finite number of moves if it is initially facing:
a) North;
b) East?
5 replies
Tintarn
Nov 16, 2024
Tintarn
4 hours ago
Number Theory
AnhQuang_67   3
N 4 hours ago by alexheinis
Find all pairs of positive integers $(m,n)$ satisfying $2^m+21^n$ is a perfect square
3 replies
AnhQuang_67
Today at 4:42 PM
alexheinis
4 hours ago
For positive integers \( a, b, c \), find all possible positive integer values o
Jackson0423   11
N 6 hours ago by zoinkers
For positive integers \( a, b, c \), find all possible positive integer values of
\[
\frac{a}{b} + \frac{b}{c} + \frac{c}{a}.
\]
11 replies
Jackson0423
Apr 13, 2025
zoinkers
6 hours ago
Set summed with itself
Math-Problem-Solving   1
N 6 hours ago by pi_quadrat_sechstel
Source: Awesomemath Sample Problems
Let $A = \{1, 4, \ldots, n^2\}$ be the set of the first $n$ perfect squares of nonzero integers. Suppose that $A \subset B + B$ for some $B \subset \mathbb{Z}$. Here $B + B$ stands for the set $\{b_1 + b_2 : b_1, b_2 \in B\}$. Prove that $|B| \geq |A|^{2/3 - \epsilon}$ holds for every $\epsilon > 0$.
1 reply
Math-Problem-Solving
Today at 1:59 AM
pi_quadrat_sechstel
6 hours ago
(x+y) f(2yf(x)+f(y))=x^3 f(yf(x)) for all x,y\in R^+
parmenides51   12
N Today at 5:19 PM by MuradSafarli
Source: Balkan BMO Shortlist 2015 A4
Find all functions $f: \mathbb{R}^{+} \rightarrow \mathbb{R}^{+}$ such that $$
(x+y)f(2yf(x)+f(y))=x^{3}f(yf(x)),  \ \ \ \forall x,y\in \mathbb{R}^{+}.$$
(Albania)
12 replies
parmenides51
Aug 5, 2019
MuradSafarli
Today at 5:19 PM
Advanced topics in Inequalities
va2010   9
N Today at 5:17 PM by Strangett
So a while ago, I compiled some tricks on inequalities. You are welcome to post solutions below!
9 replies
va2010
Mar 7, 2015
Strangett
Today at 5:17 PM
24 Aug FE problem
nicky-glass   3
N Today at 4:48 PM by pco
Source: Baltic Way 1995
$f:\mathbb R\setminus \{0\} \to \mathbb R$
(i) $f(1)=1$,
(ii) $\forall x,y,x+y \neq 0:f(\frac{1}{x+y})=f(\frac{1}{x})+f(\frac{1}{y}) : P(x,y)$
(iii) $\forall x,y,x+y \neq 0:(x+y)f(x+y)=xyf(x)f(y) :Q(x,y)$
$f=?$
3 replies
nicky-glass
Aug 24, 2016
pco
Today at 4:48 PM
Simply equation but hard
giangtruong13   1
N Today at 4:47 PM by anduran
Find all integer pairs $(x,y)$ satisfy that: $$(x^2+y)(y^2+x)=(x-y)^3$$
1 reply
giangtruong13
Today at 3:29 PM
anduran
Today at 4:47 PM
Hard Polynomial Problem
MinhDucDangCHL2000   1
N Today at 4:12 PM by Tung-CHL
Source: IDK
Let $P(x)$ be a polynomial with integer coefficients. Suppose there exist infinitely many integer pairs $(a,b)$ such that $P(a) + P(b) = 0$. Prove that the graph of $P(x)$ is symmetric about a point (i.e., it has a center of symmetry).
1 reply
MinhDucDangCHL2000
Today at 2:44 PM
Tung-CHL
Today at 4:12 PM
Stop looking for the "right" training
G H J
G H BBookmark kLocked kLocked NReply
Source: Contest advice
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v_Enhance
6872 posts
#37 • 24 Y
Y by ahaanomegas, droid347, DrMath, TheMaskedMagician, TituLemma, samuel, GrantStar, hamburgerwhizz, samrocksnature, HamstPan38825, kavya.rajesh, RedFlame2112, suvamkonar, DofL, icematrix2, Jc426, megarnie, MathNinja234, ImSh95, AlienGirl05, Adventure10, ethancui0529, cubres, and 1 other user
The Wiki has a ranking of competition difficulties: http://www.artofproblemsolving.com/Wiki/index.php/A:CR. I don't know how accurate it is but it might be worth looking at.

Keep in mind that within any particular olympiad, the difficulty of the problems is not uniform. For a standard six-problem olympiad, we often have \[ 1 \le 4 < 2 \le 5 \ll 3 \le 6. \]

A particular suggestion might be the All-Russian olympiads, as these are also divided into grades, and Russian problems tend to be less technical than, say, the USAMO. (And there's lots of nice problems.)
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pythag011
2453 posts
#38 • 15 Y
Y by Wolstenholme, tanuagg13, pythagOll, TituLemma, samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
v_Enhance wrote:
The Wiki has a ranking of competition difficulties: http://www.artofproblemsolving.com/Wiki/index.php/A:CR. I don't know how accurate it is but it might be worth looking at.

Keep in mind that within any particular olympiad, the difficulty of the problems is not uniform. For a standard six-problem olympiad, we often have \[ 1 \le 4 < 2 \le 5 \ll 3 \le 6. \]

A particular suggestion might be the All-Russian olympiads, as these are also divided into grades, and Russian problems tend to be less technical than, say, the USAMO. (And there's lots of nice problems.)

I think recommending Russian problems to someone who finds USAJMO too hard is a bit crazy....
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tanuagg13
137 posts
#39 • 11 Y
Y by samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
pythag011 wrote:
I think recommending Russian problems to someone who finds USAJMO too hard is a bit crazy....

Is there any other sequence of olympiads you would suggest for me to try?
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SMOJ
2663 posts
#40 • 14 Y
Y by samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres, and 2 other users
No, Russian problems are nice.

But whatever, here are possible contests:

http://www.artofproblemsolving.com/Forum/resources.php?c=1&cid=21&sid=8a09a53f932791469233c1c45afb2d5c

http://www.math.toronto.edu/oz/turgor/archives.php
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Bob_Smith
513 posts
#41 • 12 Y
Y by samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
This is truly the best advice ever about Competition math on AoPS. Helped a ton!
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Mathlete55
457 posts
#42 • 12 Y
Y by gradysocool, samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, ImSh95, AlienGirl05, Adventure10, ethancui0529, cubres
Finally, someone revives a useful thread that I otherwise might not have seen.
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fishy15
2219 posts
#43 • 13 Y
Y by Binomial-theorem, LoneConquerorer, samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
there should be a combined motivation sticky at the top
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Pks
7 posts
#45 • 11 Y
Y by samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
Sir Evan Chen,
I have also books like AoPS volume 1 and 2 and precalculas.I also have books like challenge and thrill of pre-college mathematics(indian authors) and Mathematical Circles.
I am also preparing for olympiads.I just wanted some seriour advice from you about:
1.How much time should I spend on any problem or in preparation?
2.What to do when you get frustrated within 5 minutes you try to solve a problem?
3.My friends are going to coaching classes for competitions like IMO,IIT(advance and mains;It is an engineering college in India where the exam is really really tough),etc. but I have not joined any.Will I be left behind...or am I doing the right thing by preparing by myself?
Please answer
Also anyone could answer my questions.Please answer.
Thank you very much!
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alderan
19 posts
#50 • 13 Y
Y by Zorger74, samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
@Pks: Read BOGTRO's post on Learn how to learn
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Pks
7 posts
#51 • 11 Y
Y by samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, ImSh95, AlienGirl05, Adventure10, ethancui0529, cubres
alderan wrote:
@Pks: Read BOGTRO's post on Learn how to learn

Thnx,alderan
; )
This post has been edited 1 time. Last edited by Pks, Feb 24, 2017, 8:04 AM
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tenplusten
1000 posts
#52 • 13 Y
Y by samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, ThisUsernameIsTaken, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
Hi @v_Enhace and all AoPsers:
@v_Enhace
When you say "do a lot of hard problems" which country's problems you meant?
Can you please say all such sources that has a great help to improve bronze-silver to silver-gold?
(In IMO/USAMO)
Also If I dont know some topics like "Cyclotomic Polynomials" or "Algebraic NT" can I try for hard problems?

And the last question :D :
How many hard problems for a day and how much time to think about one problem?
Thanks !!!
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Kayak
1298 posts
#53 • 20 Y
Y by Wizard_32, Aarth, Toinfinity, hamburgerwhizz, samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, asimov, aidan0626, ImSh95, ultimate_life_form, AlienGirl05, HighWater, Adventure10, ethancui0529, Mango247, cubres
@10+10: Re first comment, read this and this blog posts (and the comment sections). And you may see this by Evan to get another perspective.

Re your second question, well everyone knows that you have to do exactly $4.3$ hard problems everyday, and you should try for them for exactly $3.53$ hours on average. Changing the daily number of problems from $4.3$ to $4.3 \pm \epsilon$ for any $\epsilon >0$ produces very bad effects, of course. (I mean isn't this question totally nonsense ?)
This post has been edited 1 time. Last edited by Kayak, Oct 16, 2017, 4:48 PM
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tenplusten
1000 posts
#54 • 14 Y
Y by hamburgerwhizz, samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, asimov, ImSh95, AlienGirl05, Adventure10, ethancui0529, Mango247, cubres
Kayak wrote:
Re your second question, well everyone knows that you have to do exactly $4.3$ hard problems everyday, and you should try for them for exactly $3.53$ hours on average. Changing the daily number of problems from $4.3$ to $4.3 \pm \epsilon$ for any $\epsilon >0$ produces very bad effects, of course. (I mean isn't this question totally nonsense ?)

Ugh ,so training olympiad $4.3$ x $3.53$ hours a day?
İn school days İ have at most 5 or 6 hours to train olympiad.
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pifinity
2960 posts
#55 • 25 Y
Y by Wizard_32, PhysicsMonster_01, Aryan-23, v4913, amyannieaop, fukano_2, hamburgerwhizz, samrocksnature, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, asimov, Sehraskar, michaelwenquan, GodOfTheRings, ImSh95, AlienGirl05, HighWater, Adventure10, ethancui0529, bowenli2023, codegirl2013, cubres
Before a contest, GET EXCITED
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blawho12
306 posts
#56 • 16 Y
Y by derpy_chimp, samrocksnature, Michw08, kavya.rajesh, RedFlame2112, suvamkonar, icematrix2, megarnie, asimov, john0512, Sehraskar, ImSh95, AlienGirl05, Adventure10, ethancui0529, cubres
tenplusten wrote:
Kayak wrote:
Re your second question, well everyone knows that you have to do exactly $4.3$ hard problems everyday, and you should try for them for exactly $3.53$ hours on average. Changing the daily number of problems from $4.3$ to $4.3 \pm \epsilon$ for any $\epsilon >0$ produces very bad effects, of course. (I mean isn't this question totally nonsense ?)

Ugh ,so training olympiad $4.3$ x $3.53$ hours a day?
İn school days İ have at most 5 or 6 hours to train olympiad.

Kayak was being sarcastic - there is no good answer to your question.
There is no 'correct' amount of problems to do, and there is not 'correct' amount of time to spend on a problem.
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