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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 June Highlights and 2025 AoPS Online Class Information
jlacosta   0
Jun 2, 2025
Congratulations to all the mathletes who competed at National MATHCOUNTS! If you missed the exciting Countdown Round, you can watch the video at this link. Are you interested in training for MATHCOUNTS or AMC 10 contests? How would you like to train for these math competitions in half the time? We have accelerated sections which meet twice per week instead of once starting on July 8th (7:30pm ET). These sections fill quickly so enroll today!

[list][*]MATHCOUNTS/AMC 8 Basics
[*]MATHCOUNTS/AMC 8 Advanced
[*]AMC 10 Problem Series[/list]
For those interested in Olympiad level training in math, computer science, physics, and chemistry, be sure to enroll in our WOOT courses before August 19th to take advantage of early bird pricing!

Summer camps are starting this 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 a transformative 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][*]June 5th, Thursday, 7:30pm ET: Open Discussion with Ben Kornell and Andrew Sutherland, Art of Problem Solving's incoming CEO Ben Kornell and CPO Andrew Sutherland host an Ask Me Anything-style chat. Come ask your questions and get to know our incoming CEO & CPO!
[*]June 9th, Monday, 7:30pm ET, Game Jam: Operation Shuffle!, Come join us to play our second round of Operation Shuffle! If you enjoy number sense, logic, and a healthy dose of luck, this is the game for you. No specific math background is required; all are welcome.[/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
Jun 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
Problem 5
blug   4
N an hour ago by Sir_Cumcircle
Source: Czech-Polish-Slovak Junior Match 2025 Problem 5
For every integer $n\geq 1$ prove that
$$\frac{1}{n+1}-\frac{2}{n+2}+\frac{3}{n+3}-\frac{4}{n+4}+...+\frac{2n-1}{3n-1}>\frac{1}{3}.$$
4 replies
blug
May 19, 2025
Sir_Cumcircle
an hour ago
Cool integer FE
Rijul saini   2
N 2 hours ago by ZVFrozel
Source: LMAO Revenge 2025 Day 1 Problem 1
Alice has a function $f : \mathbb N \rightarrow \mathbb N$ such that for all naturals $a, b$ the function satisfies:
\[a + b \mid a^{f(a)} + b^{f(b)} \]Bob wants to find all possible functions Alice could have. Help Bob and find all functions that Alice could have.
2 replies
Rijul saini
Yesterday at 7:06 PM
ZVFrozel
2 hours ago
star on a quilt
derekwang2048   22
N 2 hours ago by RedFireTruck
Source: 2025 AMC 8 #1
The eight-pointed star, shown in the figure below, is a popular quilting pattern. What percent of the entire $4$-by-$4$ grid is covered by the star?

$\textbf{(A)}\ 40\qquad \textbf{(B)}\ 50\qquad \textbf{(C)}\ 60\qquad \textbf{(D)}\ 75\qquad \textbf{(E)}\ 80$
IMAGE

Thank you @zhenghua for the diagram!
22 replies
derekwang2048
Jan 30, 2025
RedFireTruck
2 hours ago
Frustration with Olympiad Geo
gulab_jamun   18
N 2 hours ago by cooljoseph
Ok, so right now, I am doing the EGMO book by Evan Chen, but when it comes to problems, there are some that just genuinely frustrate me and I don't know how to deal with them. For example, I've spent 1.5 hrs on the second to last question in chapter 2, and used all the hints, and I still am stuck. It just frustrates me incredibly. Any tips on managing this? (or.... am I js crashing out too much?)
18 replies
gulab_jamun
May 29, 2025
cooljoseph
2 hours ago
A beautiful collinearity regarding three wonderful points
math_pi_rate   10
N 2 hours ago by alexanderchew
Source: Own
Let $\triangle DEF$ be the medial triangle of an acute-angle triangle $\triangle ABC$. Suppose the line through $A$ perpendicular to $AB$ meet $EF$ at $A_B$. Define $A_C,B_A,B_C,C_A,C_B$ analogously. Let $B_CC_B \cap BC=X_A$. Similarly define $X_B$ and $X_C$. Suppose the circle with diameter $BC$ meet the $A$-altitude at $A'$, where $A'$ lies inside $\triangle ABC$. Define $B'$ and $C'$ similarly. Let $N$ be the circumcenter of $\triangle DEF$, and let $\omega_A$ be the circle with diameter $X_AN$, which meets $\odot (X_A,A')$ at $A_1,A_2$. Similarly define $\omega_B,B_1,B_2$ and $\omega_C,C_1,C_2$.
1) Show that $X_A,X_B,X_C$ are collinear.
2) Prove that $A_1,A_2,B_1,B_2,C_1,C_2$ lie on a circle centered at $N$.
3) Prove that $\omega_A,\omega_B,\omega_C$ are coaxial.
4) Show that the line joining $X_A,X_B,X_C$ is perpendicular to the radical axis of $\omega_A,\omega_B,\omega_C$.
10 replies
math_pi_rate
Nov 8, 2018
alexanderchew
2 hours ago
Tricky FE
Rijul saini   4
N 2 hours ago by YaoAOPS
Source: LMAO 2025 Day 1 Problem 1
Let $\mathbb{R}$ denote the set of all real numbers. Find all functions $f : \mathbb{R} \to \mathbb{R}$ such that
$$f(xy) + f(f(y)) = f((x + 1)f(y))$$for all real numbers $x$, $y$.

Proposed by MV Adhitya and Kanav Talwar
4 replies
Rijul saini
Yesterday at 6:58 PM
YaoAOPS
2 hours ago
Quotient of Polynomials is Quadratic
tastymath75025   26
N 2 hours ago by pi271828
Source: USA TSTST 2017 Problem 3, by Linus Hamilton and Calvin Deng
Consider solutions to the equation \[x^2-cx+1 = \dfrac{f(x)}{g(x)},\]where $f$ and $g$ are polynomials with nonnegative real coefficients. For each $c>0$, determine the minimum possible degree of $f$, or show that no such $f,g$ exist.

Proposed by Linus Hamilton and Calvin Deng
26 replies
tastymath75025
Jun 29, 2017
pi271828
2 hours ago
MOP Emails Out! (2025)
Mathandski   121
N 2 hours ago by Schintalpati
What an emotional roller coaster the past 34 days have been.

Congrats to all that qualified!
121 replies
Mathandski
Apr 22, 2025
Schintalpati
2 hours ago
Bugs Bunny at it again
Rijul saini   4
N 2 hours ago by ThatApollo777
Source: LMAO 2025 Day 2 Problem 1
Bugs Bunny wants to choose a number $k$ such that every collection of $k$ consecutive positive integers contains an integer whose sum of digits is divisible by $2025$.

Find the smallest positive integer $k$ for which he can do this, or prove that none exist.

Proposed by Saikat Debnath and MV Adhitya
4 replies
Rijul saini
Yesterday at 7:01 PM
ThatApollo777
2 hours ago
Orthocenters equidistant from circumcenter
Rijul saini   5
N 2 hours ago by YaoAOPS
Source: India IMOTC 2025 Day 1 Problem 2
In triangle $ABC$, consider points $A_1,A_2$ on line $BC$ such that $A_1,B,C,A_2$ are in that order and $A_1B=AC$ and $CA_2=AB$. Similarly consider points $B_1,B_2$ on line $AC$, and $C_1,C_2$ on line $AB$. Prove that orthocenters of triangles $A_1B_1C_1$ and $A_2B_2C_2$ are equidistant from the circumcenter of $ABC$.

Proposed by Shantanu Nene
5 replies
Rijul saini
Yesterday at 6:31 PM
YaoAOPS
2 hours ago
Six variables (2)
Nguyenhuyen_AG   1
N 2 hours ago by lbh_qys
Let $a, \, b, \,c, \, x, \, y, \, z$ be six positive real numbers. Prove that
\[a^2+b^2+c^2+\frac{4(ax+by+cz)\sqrt{ab+bc+ca}}{x+y+z} \geqslant 2(ab+bc+ca).\]
1 reply
Nguyenhuyen_AG
3 hours ago
lbh_qys
2 hours ago
The line is a common tangent
Rijul saini   3
N 2 hours ago by pingupignu
Source: India IMOTC 2025 Day 4 Problem 3
Let $ABCD$ be a cyclic quadrilateral with circumcentre $O$ and circumcircle $\Gamma$. Let $T$ be the intersection of tangents at $B$ and $C$ to $\Gamma$. Let $\omega$ be the circumcircle of triangle $TBC$ and let $M(\neq T)$, $N(\neq T)$ denote the second intersections of $TA,TD$ with $\omega$ respectively. Let $AD$ and $BC$ intersect at $E$ and $\Omega$ be the circumcircle of triangle $EMN$. If $AD$ intersects $\Omega$ again at $X \neq E$, prove that the line tangent to $\Omega$ at $X$ is also tangent to $\omega$.

Proposed by Malay Mahajan and Siddharth Choppara
3 replies
Rijul saini
Yesterday at 6:47 PM
pingupignu
2 hours ago
One of P or Q lies on circle
Rijul saini   6
N 2 hours ago by ZVFrozel
Source: LMAO 2025 Day 1 Problem 3
Let $ABC$ be an acute triangle with orthocenter $H$. Let $M$ be the midpoint of $BC$, and $K$ be the intersection of the tangents from $B$ and $C$ to the circumcircle of $ABC$. Denote by $\Omega$ the circle centered at $H$ and tangent to line $AM$.

Suppose $AK$ intersects $\Omega$ at two distinct points $X$, $Y$.
Lines $BX$ and $CY$ meet at $P$, while lines $BY$ and $CX$ meet at $Q$. Prove that either $P$ or $Q$ lies on $\Omega$.

Proposed by MV Adhitya, Archit Manas and Arnav Nanal
6 replies
Rijul saini
Yesterday at 6:59 PM
ZVFrozel
2 hours ago
Solutions to Challenging Problems in Middle School Math by Ertan Kay
BlisterBud7S   1
N 3 hours ago by Gavin_Deng
Hi,

I have purchased this book, however cannot locate a copy of their solutions manual. Could someone please help wit this?
1 reply
BlisterBud7S
Yesterday at 2:22 AM
Gavin_Deng
3 hours ago
9 Mathpath vs. AMSP
FuturePanda   34
N May 2, 2025 by ZMB038
Hi everyone,

For an AIME score of 7-11, would you recommend MathPath or AMSP Level 2/3?

Thanks in advance!
Also people who have gone to them, please tell me more about the programs!
34 replies
FuturePanda
Jan 30, 2025
ZMB038
May 2, 2025
Mathpath vs. AMSP
G H J
G H BBookmark kLocked kLocked NReply
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FuturePanda
246 posts
#1
Y by
9Poll:
MathPath or AMSP?
137 Votes
52%
(71)
48%
(66)
Hide Results Show Results
You must be signed in to vote.
Hi everyone,

For an AIME score of 7-11, would you recommend MathPath or AMSP Level 2/3?

Thanks in advance!
Also people who have gone to them, please tell me more about the programs!
This post has been edited 1 time. Last edited by FuturePanda, Jan 30, 2025, 3:16 AM
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DreamineYT
299 posts
#2
Y by
If you want to have fun and take a break from comp math, take mathpath. It's really fun and overall a really good experience(also a chance to expand socially)

On the other hand, if you want to grind comp math, take AMSP. It's going to help you a lot(hopefully?)
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FuturePanda
246 posts
#3
Y by
Thank you! Specifically, if I had a goal of making MOP(or at least USAMO/USAJMO) next year, but don't want to burn out, which one would benefit me more? Does AMSP offer activities to ensure social interaction?
Z K Y
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FuturePanda
246 posts
#4
Y by
Bump :) :) :)
Z K Y
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DreamineYT
299 posts
#5
Y by
FuturePanda wrote:
Thank you! Specifically, if I had a goal of making MOP(or at least USAMO/USAJMO) next year, but don't want to burn out, which one would benefit me more? Does AMSP offer activities to ensure social interaction?

There are activities on the weekends that are purely for fun(among us, geoguessr from my experience). If things haven't changed, you could do one session of AMSP and MathPath, and im pretty sure they won't conflict. But you have to check the schedule to make sure they don't conflict.
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Ruegerbyrd
1108 posts
#6
Y by
AMSP has more flexible times for classes and is probably more advanced than MathPath.
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FuturePanda
246 posts
#7
Y by
People who have been to MathPath, how many questions did you answer?
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DreamineYT
299 posts
#8
Y by
FuturePanda wrote:
People who have been to MathPath, how many questions did you answer?

On what
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FuturePanda
246 posts
#9
Y by
Application
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FuturePanda
246 posts
#10
Y by
Bump(20+ threads above i think)
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apex304
524 posts
#12
Y by
I have attended AMSP and I would sound probably AMSP since thee curriculum is built based on AMC 10, AIME and JMO/AMO
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RainbowSquirrel53B
595 posts
#13
Y by
FuturePanda wrote:
People who have been to MathPath, how many questions did you answer?

all of them but they're harder this year :(
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FuturePanda
246 posts
#14 • 1 Y
Y by MathCosine
Ok, I submitted it, it's all out of my hands now :)
What are my chances with a 4/6 compltte solve and showing my ideas for other 2(both of which I did part a)?
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Ruegerbyrd
1108 posts
#15
Y by
pretty good if you have solid proofs on the 4 complete solves, and good ideas for the other 2, it's always good to submit before the deadline
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FuturePanda
246 posts
#16 • 1 Y
Y by MathCosine
ok, tysm
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ZMB038
310 posts
#17
Y by
Future panda are you going this year?
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GarudS
941 posts
#18
Y by
FuturePanda wrote:
Hi everyone,

For an AIME score of 7-11, would you recommend MathPath or AMSP Level 2/3?

Thanks in advance!
Also people who have gone to them, please tell me more about the programs!

Don't do AMSP L3 unless you are either:
* somewhat competent at L2
* somewhat competent at USAMO.
I did NT3 last year and I have to retake it this year.. (It was MTip not Tudor but yeah...)
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FuturePanda
246 posts
#19
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ZMB038 wrote:
Future panda are you going this year?
Rejected Click to reveal hidden text
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FuturePanda
246 posts
#20
Y by
GarudS wrote:
FuturePanda wrote:
Hi everyone,

For an AIME score of 7-11, would you recommend MathPath or AMSP Level 2/3?

Thanks in advance!
Also people who have gone to them, please tell me more about the programs!

Don't do AMSP L3 unless you are either:
* somewhat competent at L2
* somewhat competent at USAMO.
I did NT3 last year and I have to retake it this year.. (It was MTip not Tudor but yeah...)
yup I'm doing OTIS now to get competent with proofs yay!
Anyways I'm taking counting strategies, combinatorial structures, algebra 2.5, and computational geo this year.
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idk12345678
408 posts
#21
Y by
GarudS wrote:
FuturePanda wrote:
Hi everyone,

For an AIME score of 7-11, would you recommend MathPath or AMSP Level 2/3?

Thanks in advance!
Also people who have gone to them, please tell me more about the programs!

Don't do AMSP L3 unless you are either:
* somewhat competent at L2
* somewhat competent at USAMO.
I did NT3 last year and I have to retake it this year.. (It was MTip not Tudor but yeah...)

NT3 seems harder than all the other L3 class though ig..
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PEKKA
1851 posts
#22
Y by
Am i the only person who doesnt find some AMPS classes like C2, C3 and A2 useful for contest prep?
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Pengu14
644 posts
#23
Y by
PEKKA wrote:
Am i the only person who doesnt find some AMPS classes like C2, C3 and A2 useful for contest prep?

Why not? I’m planning on taking C3 so I’m just wondering why you didn’t find them useful.
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torch
1017 posts
#24
Y by
personally would recommend MathPath. you can build a lot of connections from many people around the nation, and it's overall super fun. :)
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idk12345678
408 posts
#25
Y by
PEKKA wrote:
Am i the only person who doesnt find some AMPS classes like C2, C3 and A2 useful for contest prep?

yea why wasnt A2 useful(ima take it this summer)
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akliu
1803 posts
#26
Y by
PEKKA wrote:
Am i the only person who doesnt find some AMPS classes like C2, C3 and A2 useful for contest prep?

I took C2, and personally I found it to be pretty interesting but also not very applicable to contest prep. When I took the class, we went over some pretty useful techniques but then quickly went beyond the scope of contest math into stuff like Ramsey Theory and Toroidal Graph Theory. I'd say that most of it is pretty important though!

Oh yeah, I also took G2. Learned a ton of contest stuff, but shoving that much geometry inside my thick skull in the span of a few weeks was not a great idea. Learned a ton, then immediately forgot a ton.

Regarding the original question: The AMSP online class prices. Help.
This post has been edited 1 time. Last edited by akliu, Apr 29, 2025, 2:28 AM
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Jaxman8
123 posts
#27
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Is 2 classes a session too much? I can only take the classes in one session, and I wanna do c2 and g2 at the same time.
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akliu
1803 posts
#28
Y by
Jaxman8 wrote:
Is 2 classes a session too much? I can only take the classes in one session, and I wanna do c2 and g2 at the same time.

Honestly, C2 itself is pretty intensive. I wouldn't recommend doing this if you're trying to get the most out of every course. I remember that every day while taking the C2 course, I would groupsolve the homework problem sets for hours with another person in the class (honorary mention to solasky if you see this), and this would take up a TON of time. The geometry homework was a little lighter for me, but I don't think it's a good idea to pair both of these at the same time unless you're pretty comfortable with at least one of the topics.
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Jaxman8
123 posts
#30
Y by
BTW, how to solve amsp l1/2 admissions test 8,9,10
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Jaxman8
123 posts
#31
Y by
And also how many hours a day is the hw per class
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fake123
93 posts
#32
Y by
Jaxman8 wrote:
BTW, how to solve amsp l1/2 admissions test 8,9,10

no discussing problem sets but I think u make it anyway if u only have 7 solves cuz they needa farm money
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Pengu14
644 posts
#33
Y by
Jaxman8 wrote:
And also how many hours a day is the hw per class

I’ve heard it’s 1-2
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LostRiptide
29 posts
#34
Y by
I don't really like amsp, had a miserable experience there. Solutions were barely provided either.
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gavinhaominwang
92 posts
#35
Y by
LostRiptide wrote:
I don't really like amsp, had a miserable experience there. Solutions were barely provided either.

thats an opinion that few share
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PEKKA
1851 posts
#36
Y by
Pengu14 wrote:
PEKKA wrote:
Am i the only person who doesnt find some AMPS classes like C2, C3 and A2 useful for contest prep?

Why not? I’m planning on taking C3 so I’m just wondering why you didn’t find them useful.
Actually I take it back like 50% of C3 is helpful. However, my instructor went into extremal graph theory and advanced probability, which are topics only used in high-level olympiads so to me, it was not super helpful. However, it does teach basic concepts pretty well tho.
idk12345678 wrote:
PEKKA wrote:
Am i the only person who doesnt find some AMPS classes like C2, C3 and A2 useful for contest prep?

yea why wasnt A2 useful(ima take it this summer)
A2 is like nearly the exact same as A1 from my experience. However if you haven't taken A1, A2 would be quite useful. It does cover some important computational topics.
akliu wrote:
PEKKA wrote:
Am i the only person who doesnt find some AMPS classes like C2, C3 and A2 useful for contest prep?

I took C2, and personally I found it to be pretty interesting but also not very applicable to contest prep. When I took the class, we went over some pretty useful techniques but then quickly went beyond the scope of contest math into stuff like Ramsey Theory and Toroidal Graph Theory. I'd say that most of it is pretty important though!

Oh yeah, I also took G2. Learned a ton of contest stuff, but shoving that much geometry inside my thick skull in the span of a few weeks was not a great idea. Learned a ton, then immediately forgot a ton.

Regarding the original question: The AMSP online class prices. Help.

Yeah same problem with C2, the toridal graph theory stuff is rarely helpful for only
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ZMB038
310 posts
#37
Y by
FuturePanda wrote:
ZMB038 wrote:
Future panda are you going this year?
Rejected Click to reveal hidden text

Dang it this is my first year going to mathpath and I wanted to know people ahead of time.
Also your not stupid the application was just hard.
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