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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
NO WAY RICHARD RUSCYK REPLIED TO MY MESSAGE
nmlikesmath   4
N 18 minutes ago by jb2015007
CHAT THIS IS UNREAL
TYSM RICHARD THANK YOU SO MUCH
4 replies
nmlikesmath
35 minutes ago
jb2015007
18 minutes ago
2025 MATHCOUNTS State Hub
SirAppel   592
N 20 minutes ago by eyzMath
Previous Years' "Hubs": (2022) (2023) (2024)Please Read

Now that it's April and we're allowed to discuss ...
[list=disc]
[*] CA: 43 (45 44 43 43 43 42 42 41 41 41)
[*] NJ: 43 (45 44 44 43 39 42 40 40 39 38) *
[*] NY: 42 (43 42 42 42 41 40)
[*] TX: 42 (43 43 43 42 42 40 40 38 38 38)
[*] MA: 41 (45 43 42 41)
[*] WA: 41 (41 45 42 41 41 41 41 41 41 40) *
[*]VA: 40 (41 40 40 40)
[*] FL: 39 (42 41 40 39 38 37 37)
[*] IN: 39 (41 40 40 39 36 35 35 35 34 34)
[*] NC: 39 (42 42 41 39)
[*] IL: 38 (41 40 39 38 38 38)
[*] OR: 38 (44 39 38 38)
[*] PA: 38 (41 40 40 38 38 37 36 36 34 34) *
[*] MD: 37 (43 39 39 37 37 37)
[*] AZ: 36 (40? 39? 39 36)
[*] CT: 36 (44 38 38 36 34? 34? 34 34 34 33 33)
[*] MI: 36 (39 41 41 36 37 37 36 36 36 36) *
[*] MN: 36 (40 36 36 36 35 35 35 34)
[*] CO: 35 (41 37 37 35 35 35 ?? 31 31 30) *
[*] GA: 35 (38 37 36 35 34 34 34 34 34 33)
[*] OH: 35 (41 37 36 35)
[*] AR: 34 (46 45 35 34 33 31 31 31 29 29)
[*] NV: 34 (41 38 ?? 34)
[*] TN: 34 (38 ?? ?? 34)
[*] WI: 34 (40 37 37 34 35 30 28 29 29 29) *
[*] HI: 32 (35 34 32 32)
[*] NH: 31 (42 35 33 31 30)
[*] DE: 30 (34 33 32 30 30 29 28 27 26? 24)
[*] SC: 30 (33 33 31 30)
[*] IA: 29 (33 30 31 29 29 29 29 29 29 29 29 29) *
[*] NE: 28 (34 30 28 28 27 27 26 26 25 25)
[*] SD: 22 (30 29 24 22 22 22 21 21 20 20)
[/list]
Cutoffs Unknown

* means that CDR is official in that state.

Notes

For those asking about the removal of the tiers, I'd like to quote Jason himself:
[quote=peace09]
learn from my mistakes
[/quote]

Help contribute by sharing your state's cutoffs!
592 replies
SirAppel
Apr 1, 2025
eyzMath
20 minutes ago
1234th Post!
PikaPika999   148
N 22 minutes ago by iwastedmyusername
I hit my 1234th post! (I think I missed it, I'm kinda late, :oops_sign:)

But here's a puzzle for you all! Try to create the numbers 1 through 25 using the numbers 1, 2, 3, and 4! You are only allowed to use addition, subtraction, multiplication, division, and parenthesis. If you're post #1, try to make 1. If you're post #2, try to make 2. If you're post #3, try to make 3, and so on. If you're a post after 25, then I guess you can try to make numbers greater than 25 but you can use factorials, square roots, and that stuff. Have fun!

1: $(4-3)\cdot(2-1)$
148 replies
PikaPika999
Yesterday at 8:54 PM
iwastedmyusername
22 minutes ago
Website to learn math
hawa   43
N 2 hours ago by anticodon
Hi, I'm kinda curious what website do yall use to learn math, like i dont find any website thats fun to learn math
43 replies
hawa
Apr 9, 2025
anticodon
2 hours ago
Inequalities
sqing   27
N 5 hours ago by Jackson0423
Let $   a,b    $ be reals such that $  a^2+ab+b^2 =3$ . Prove that
$$ \frac{4}{ 3}\geq \frac{1}{ a^2+5 }+ \frac{1}{ b^2+5 }+ab \geq -\frac{11}{4 }$$$$ \frac{13}{ 4}\geq \frac{1}{ a^2+5 }+ \frac{1}{ b^2+5 }+ab \geq -\frac{2}{3 }$$$$ \frac{3}{ 2}\geq  \frac{1}{ a^4+3 }+ \frac{1}{ b^4+3 }+ab \geq -\frac{17}{6 }$$$$ \frac{19}{ 6}\geq  \frac{1}{ a^4+3 }+ \frac{1}{ b^4+3 }-ab \geq -\frac{1}{2}$$Let $   a,b    $ be reals such that $  a^2-ab+b^2 =1 $ . Prove that
$$ \frac{3}{ 2}\geq \frac{1}{ a^2+3 }+ \frac{1}{ b^2+3 }+ab \geq \frac{4}{15 }$$$$ \frac{14}{ 15}\geq \frac{1}{ a^2+3 }+ \frac{1}{ b^2+3 }-ab \geq -\frac{1}{2 }$$$$ \frac{3}{ 2}\geq \frac{1}{ a^4+3 }+ \frac{1}{ b^4+3 }+ab \geq \frac{13}{42 }$$$$ \frac{41}{ 42}\geq \frac{1}{ a^4+3 }+ \frac{1}{ b^4+3 }-ab \geq -\frac{1}{2 }$$
27 replies
sqing
Apr 16, 2025
Jackson0423
5 hours ago
Inequalities
sqing   6
N 5 hours ago by sqing
Let $ a,b,c> 0 $ and $ ab+bc+ca\leq  3abc . $ Prove that
$$ a+ b^2+c\leq a^2+ b^3+c^2 $$$$ a+ b^{11}+c\leq a^2+ b^{12}+c^2 $$
6 replies
sqing
Today at 1:54 PM
sqing
5 hours ago
Problem of the Week--The Sleeping Beauty Problem
FiestyTiger82   1
N 5 hours ago by martianrunner
Put your answers here and discuss!
The Problem
1 reply
FiestyTiger82
6 hours ago
martianrunner
5 hours ago
Inequalities
sqing   4
N Today at 1:09 PM by sqing
Let $ a,b,c $ be real numbers such that $ a^2+b^2+c^2=1. $ Prove that$$ |a-b|+|b-2c|+|c-3a|\leq 5$$$$|a-2b|+|b-3c|+|c-4a|\leq \sqrt{42}$$$$ |a-b|+|b-\frac{11}{10}c|+|c-a|\leq \frac{29}{10}$$
4 replies
sqing
Today at 5:05 AM
sqing
Today at 1:09 PM
Inequalities
nhathhuyyp5c   2
N Today at 12:38 PM by pooh123
Let $a, b, c$ be non-negative real numbers such that $a^2 + b^2 + c^2 = 3$. Find the maximum and minimum values of the expression
\[
P = \frac{a}{a^2 + 2} + \frac{b}{b^2 + 2} + \frac{c}{c^2 + 2}.
\]
2 replies
nhathhuyyp5c
Apr 20, 2025
pooh123
Today at 12:38 PM
Challenging Optimization Problem
Shiyul   5
N Today at 12:28 PM by exoticc
Let $xyz = 1$. Find the minimum and maximum values of $\frac{1}{1 + x + xy}$ + $\frac{1}{1 + y + yz}$ + $\frac{1}{1 + z + zx}$

Can anyone give me a hint? I got that either the minimum or maximum was 1, but I'm sure if I'm correct.
5 replies
Shiyul
Yesterday at 8:20 PM
exoticc
Today at 12:28 PM
Geometry Angle Chasing
Sid-darth-vater   1
N Today at 9:36 AM by vanstraelen
Is there a way to do this without drawing obscure auxiliary lines? (the auxiliary lines might not be obscure I might just be calling them obscure)

For example I tried rotating triangle MBC 80 degrees around point C (so the BC line segment would now lie on segment AC) but I couldn't get any results. Any help would be appreciated!
1 reply
Sid-darth-vater
Yesterday at 11:50 PM
vanstraelen
Today at 9:36 AM
Radical Axes and circles
mathprodigy2011   4
N Today at 7:53 AM by spiderman0
Can someone explain how to do this purely geometrically?
4 replies
mathprodigy2011
Today at 1:58 AM
spiderman0
Today at 7:53 AM
Combinatoric
spiderman0   0
Today at 7:46 AM
Let $ S = \{1, 2, 3, \ldots, 2024\}.$ Find the maximum positive integer $n \geq 2$ such that for every subset $T \subset S$ with n elements, there always exist two elements a, b in T such that:

$|\sqrt{a} - \sqrt{b}| < \frac{1}{2} \sqrt{a - b}$
0 replies
spiderman0
Today at 7:46 AM
0 replies
BMT 2018 Algebra Round Problem 7
IsabeltheCat   5
N Today at 6:56 AM by P162008
Let $$h_n := \sum_{k=0}^n \binom{n}{k} \frac{2^{k+1}}{(k+1)}.$$Find $$\sum_{n=0}^\infty \frac{h_n}{n!}.$$
5 replies
IsabeltheCat
Dec 3, 2018
P162008
Today at 6:56 AM
Mathpath acceptance rate
fossasor   15
N 2 hours ago by ZMB038
Does someone have an estimate for the acceptance rate for MathPath?
15 replies
fossasor
Dec 21, 2024
ZMB038
2 hours ago
Mathpath acceptance rate
G H J
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fossasor
587 posts
#1
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Does someone have an estimate for the acceptance rate for MathPath?
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oinava
506 posts
#2
Y by
Years ago it was about 15%, but probably much lower now.
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fossasor
587 posts
#3
Y by
Ugh, that's unfortunate. Is there any suggestion you can make for me to improve my chances of acceptance?
Z K Y
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lily2030
595 posts
#4
Y by
How hard is mathpath?
What is the level that people are at to get in? (in terms of mathcounts, amc 10, amc 8, etc.)
Z K Y
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oinava
506 posts
#5
Y by
fossasor wrote:
Ugh, that's unfortunate. Is there any suggestion you can make for me to improve my chances of acceptance?

Convince some mathematicians to open more middle school math camps or increase the size of existing ones.

Anything an applicant does to improve their chances makes everyone else's chances lower.
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oinava
506 posts
#6
Y by
lily2030 wrote:
How hard is mathpath?
What is the level that people are at to get in? (in terms of mathcounts, amc 10, amc 8, etc.)

It's a secret. The staff don't want applicants to know.

I gather that the theory is that it's not supposed to matter, because the Qualifying Test is mostly self-selecting as a preview of the MathPath experience. MathCamp is like an all day, all week, all month Qualifying Test.

Only attempt as much of the Qualifying Test as you enjoy. Then if you get in, trust that they know you are ready for camp (which is highly adaptive with dozens of different courses to choose from, and no grades), because there are many more qualified applicants than spots.
And if you don't get in, it's OK because not getting everything you want is just how life is, and no harm done because you enjoyed the time you spent taking the test.

The only big problem with this theory is that the Qualifying Test is a solitary, lonely experience, but camp is very social and interactive.

https://www.mathpath.org/life/faq
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fossasor
587 posts
#7
Y by
oinava wrote:
fossasor wrote:
Ugh, that's unfortunate. Is there any suggestion you can make for me to improve my chances of acceptance?

Convince some mathematicians to open more middle school math camps or increase the size of existing ones.

Anything an applicant does to improve their chances makes everyone else's chances lower.

... any ACTUAL advice?
Z K Y
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dragonborn56
1529 posts
#8
Y by
I don;t think that there is much that you can do apart from trying your best on the qualifying test and submitting early. Also, if you are rejected, try again next year if you are able. I myself was rejected the first time that I applied, and tried again and was admitted.
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SOAR1231
28 posts
#9
Y by
apply earlier
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fossasor
587 posts
#10
Y by
I have - my application was submitted completely this Sunday, so it's all out of my hands now. Thank you for the advice!
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SOAR1231
28 posts
#11
Y by
oh nice, some decisions already came out
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DreamineYT
282 posts
#12
Y by
lily2030 wrote:
How hard is mathpath?
What is the level that people are at to get in? (in terms of mathcounts, amc 10, amc 8, etc.)

imo i dont think they focus on this very much. I think they focus more on like ur hobbies and stuff because they want u to have a life outside of math

all of the courses have very different difficulties, and the ones that are together(plenaries) can sometimes be challeniging. Also, it's not like AMSP where comp math is the main focus. It's more about research math or theoretical math(topology, for example)
This post has been edited 1 time. Last edited by DreamineYT, Jan 31, 2025, 3:22 AM
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ZMB038
96 posts
#13
Y by
This summer will be my first year going, what's math Path like?
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ZMB038
96 posts
#14
Y by
DreamineYT wrote:
lily2030 wrote:
How hard is mathpath?
What is the level that people are at to get in? (in terms of mathcounts, amc 10, amc 8, etc.)

imo i dont think they focus on this very much. I think they focus more on like ur hobbies and stuff because they want u to have a life outside of math

all of the courses have very different difficulties, and the ones that are together(plenaries) can sometimes be challeniging. Also, it's not like AMSP where comp math is the main focus. It's more about research math or theoretical math(topology, for example)

It looks really fun, can't wait to go. I like proofs better than comp math anyway.
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RainbowSquirrel53B
589 posts
#15
Y by
ZMB038 wrote:
This summer will be my first year going, what's math Path like?

fun :D you meet lots of cool people
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ZMB038
96 posts
#16
Y by
RainbowSquirrel53B wrote:
ZMB038 wrote:
This summer will be my first year going, what's math Path like?

fun :D you meet lots of cool people

Cool, are you going this year?
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