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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]
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0 replies
jlacosta
Jun 2, 2025
0 replies
rule of three in books (2018OMMEB, I-N1)
CarSa   1
N a few seconds ago by huajun78
In 4 days, six printing machines have printed 100 books. How many days will it take to print 50 books if only four printing machines are working?
1 reply
+1 w
CarSa
an hour ago
huajun78
a few seconds ago
MIT PRIMES STEP
pingpongmerrily   19
N 5 minutes ago by Multpi12
Anyone else applying? How cooked am I for the placement test... (106.5 AMC 10, 5 AIME, 36/27 States/Nationals)
19 replies
pingpongmerrily
May 30, 2025
Multpi12
5 minutes ago
2500th Post!
PikaPika999   63
N 3 hours ago by K124659
I may be a bit late for this, but this is my 2500th post :)
Also this is going to be my last one until another big milestone bc I don't wanna clog up the MSM forum with my milestones

Also, since my 1000th post math story was locked due to a flamewar, here is my math story with a few updates :)
(This was also scripted so if there are any problems in my story, um... well, it is what it is)

Script starts:


When I had less than 25 posts on AoPS, I saw many people create threads about them getting 1000th posts and their math story. I thought I would never hit 1000 posts, but I did, and that thread got locked...Please


So, lol here we are, writing my math story again :)


Daycare

Preschool

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

In conclusion, AoPS has helped me improve my math. Minor side note, but

Finally, I would like to say thank you to all the new friends I made and all the instructors on AoPS that taught me!

Another minor side note, but

and here are some problems ig :)

Problems

hopefully these problems weren't too easy lol
63 replies
PikaPika999
May 29, 2025
K124659
3 hours ago
9 Prodigy AoPS or Khanacadamy
ZMB038   185
N 3 hours ago by ZMB038
Hey everyone just was wondering what everybody prefers? Try not to fight so this doesn't get locked!
185 replies
ZMB038
May 22, 2025
ZMB038
3 hours ago
No more topics!
drawn to scale
A7456321   21
N May 23, 2025 by Soupboy0
would you guys say that the diagrams drawn on math comp papers are usually drawn to scale (or at least close)? i have found that they are usually pretty accurate even tho the test always says that they are not necessarily to scale
21 replies
A7456321
May 15, 2025
Soupboy0
May 23, 2025
drawn to scale
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G H BBookmark kLocked kLocked NReply
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A7456321
343 posts
#1
Y by
would you guys say that the diagrams drawn on math comp papers are usually drawn to scale (or at least close)? i have found that they are usually pretty accurate even tho the test always says that they are not necessarily to scale
This post has been edited 1 time. Last edited by A7456321, May 15, 2025, 2:06 AM
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steve4916
91 posts
#2
Y by
close, yes but always a little off
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Soupboy0
521 posts
#3 • 1 Y
Y by mithu542
exception: 2025 mc state sprint 27
(all of my teammates guessed 2...)
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iwastedmyusername
202 posts
#4
Y by
Soupboy0 wrote:
exception: 2025 mc state sprint 27
(all of my teammates guessed 2...)

LMAO SAME
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A7456321
343 posts
#5
Y by
i see the problem and i see why they all guessed 2 :skull:
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A7456321
343 posts
#6
Y by
my school is too bad to have a mathcounts team my math teacher doesnt even know what ,ath counts is :skull:
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steve4916
91 posts
#7 • 1 Y
Y by Exponent11
i put 5 for state p27 bro its so cheesable, just assume rectangle
This post has been edited 1 time. Last edited by steve4916, May 15, 2025, 2:52 AM
Reason: Enter your reason for editing the post here. This reason will be displayed with the post.
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Soupboy0
521 posts
#8 • 1 Y
Y by Exponent11
me too
rbuh light for p27
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valisaxieamc
512 posts
#9 • 1 Y
Y by Exponent11
yea for amc 10b last yr there was a question with a diagram and I just measured it on the paper to get the answer ( and i got it right )
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giratina3
560 posts
#10 • 1 Y
Y by Exponent11
I was thinking of drawing a rectangle but quickly threw away the idea into the trash because it didn’t seem optimal (I was crazy back then).
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zhoujef000
328 posts
#12 • 1 Y
Y by Exponent11
optimal solution (due to a friend not me) is to assume the parallelogram is a line
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fruitmonster97
2506 posts
#13
Y by
zhoujef000 wrote:
optimal solution (due to a friend not me) is to assume the parallelogram is a line

don't expose the sacred geometry

Also @above if there is something the diagram wants to hide, it can.
lesser known comp, not exact wording wrote:
Let $ABC$ be a 5-12-13 with $AC$ hypotenuse, and let $\omega$ be it's circumcircle. let $D$ be the foot from $B$ to $AC,$ and let feet from $D$ to $AB, BC$ be $E,F.$ The line through $B$ perpendicular to $EF$ meets $\omega$ again at $X.$ Compute $BX.$
Of course, the key point of the problem is that $BX$ is a diameter, so the answer is 13. And there was a diagram attached, with $X$ nowhere near opposite $B.$ (the problem was still obvious bc the comp had all answers as integers, but whatever).

actual solution, if you care
If the problem needs to hide something, it will, but otherwise they're usually accurate
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TiguhBabeHwo
490 posts
#14
Y by
zhoujef000 wrote:
optimal solution (due to a friend not me) is to assume the parallelogram is a line

I just made the parallelogram really really close to a line so I could still visualize it and from there it becomes pretty trivial to see 5.
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Andrew2019
2364 posts
#15
Y by
zhoujef000 wrote:
optimal solution (due to a friend not me) is to assume the parallelogram is a line

assume unit square is what i usually do
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ZMB038
334 posts
#16
Y by
Andrew2019 wrote:
zhoujef000 wrote:
optimal solution (due to a friend not me) is to assume the parallelogram is a line

assume unit square is what i usually do

same lol
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LXC007
82 posts
#17
Y by
valisaxieamc wrote:
yea for amc 10b last yr there was a question with a diagram and I just measured it on the paper to get the answer ( and i got it right )

You were allowed a ruler?
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Soupboy0
521 posts
#18
Y by
yeah youre allowed to use a ruler on amc10/12
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Inaaya
423 posts
#19
Y by
Soupboy0 wrote:
yeah youre allowed to use a ruler on amc10/12

WAIT WHAT
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A7456321
343 posts
#20
Y by
WHAT NO MY HAX
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ZMB038
334 posts
#21
Y by
Since when?
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Charizard_637
125 posts
#22
Y by
Soupboy0 wrote:
exception: 2025 mc state sprint 27
(all of my teammates guessed 2...)

this kid's capping i guessed 7/12 (I looked at the wrong side maybe I would've got it right if I had a better guess :wallbash_red:)
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Soupboy0
521 posts
#23
Y by
bruh what it didnt even say "express your answer as a common fraction"
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