ka April Highlights and 2025 AoPS Online Class Information
jlacosta0
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)!
Prealgebra 1
Sunday, Apr 13 - Aug 10
Tuesday, May 13 - Aug 26
Thursday, May 29 - Sep 11
Sunday, Jun 15 - Oct 12
Monday, Jun 30 - Oct 20
Wednesday, Jul 16 - Oct 29
Introduction to Algebra A
Monday, Apr 7 - Jul 28
Sunday, May 11 - Sep 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Wednesday, May 14 - Aug 27
Friday, May 30 - Sep 26
Monday, Jun 2 - Sep 22
Sunday, Jun 15 - Oct 12
Thursday, Jun 26 - Oct 9
Tuesday, Jul 15 - Oct 28
Introduction to Counting & Probability
Wednesday, Apr 16 - Jul 2
Thursday, May 15 - Jul 31
Sunday, Jun 1 - Aug 24
Thursday, Jun 12 - Aug 28
Wednesday, Jul 9 - Sep 24
Sunday, Jul 27 - Oct 19
Introduction to Number Theory
Thursday, Apr 17 - Jul 3
Friday, May 9 - Aug 1
Wednesday, May 21 - Aug 6
Monday, Jun 9 - Aug 25
Sunday, Jun 15 - Sep 14
Tuesday, Jul 15 - Sep 30
Introduction to Algebra B
Wednesday, Apr 16 - Jul 30
Tuesday, May 6 - Aug 19
Wednesday, Jun 4 - Sep 17
Sunday, Jun 22 - Oct 19
Friday, Jul 18 - Nov 14
Introduction to Geometry
Wednesday, Apr 23 - Oct 1
Sunday, May 11 - Nov 9
Tuesday, May 20 - Oct 28
Monday, Jun 16 - Dec 8
Friday, Jun 20 - Jan 9
Sunday, Jun 29 - Jan 11
Monday, Jul 14 - Jan 19
Intermediate: Grades 8-12
Intermediate Algebra
Monday, Apr 21 - Oct 13
Sunday, Jun 1 - Nov 23
Tuesday, Jun 10 - Nov 18
Wednesday, Jun 25 - Dec 10
Sunday, Jul 13 - Jan 18
Thursday, Jul 24 - Jan 22
MATHCOUNTS/AMC 8 Basics
Wednesday, Apr 16 - Jul 2
Friday, May 23 - Aug 15
Monday, Jun 2 - Aug 18
Thursday, Jun 12 - Aug 28
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)
MATHCOUNTS/AMC 8 Advanced
Friday, Apr 11 - Jun 27
Sunday, May 11 - Aug 10
Tuesday, May 27 - Aug 12
Wednesday, Jun 11 - Aug 27
Sunday, Jun 22 - Sep 21
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)
AMC 10 Problem Series
Friday, May 9 - Aug 1
Sunday, Jun 1 - Aug 24
Thursday, Jun 12 - Aug 28
Tuesday, Jun 17 - Sep 2
Sunday, Jun 22 - Sep 21 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Monday, Jun 23 - Sep 15
Tues & Thurs, Jul 8 - Aug 14 (meets twice a week!)
AMC 10 Final Fives
Sunday, May 11 - Jun 8
Tuesday, May 27 - Jun 17
Monday, Jun 30 - Jul 21
AMC 12 Problem Series
Tuesday, May 27 - Aug 12
Thursday, Jun 12 - Aug 28
Sunday, Jun 22 - Sep 21
Wednesday, Aug 6 - Oct 22
Introduction to Programming with Python
Thursday, May 22 - Aug 7
Sunday, Jun 15 - Sep 14 (1:00 - 2:30 pm ET/10:00 - 11:30 am PT)
Tuesday, Jun 17 - Sep 2
Monday, Jun 30 - Sep 22
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][/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 , do not answer with " is a solution" only. Either you post any kind of proof or at least something unexpected (like " is the smallest solution). Someone that does not see that 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.
Let be a triangle with , and let be the foot of the altitude from . A point is chosen inside the triangle so that bisects . Let be the intersection point of the lines and . Let be the semicircle with diameter that meets the segment at an interior point. A line through is tangent to at . Prove that the lines and meet on .
Let denote the number of positive integers that divide , including and . For example, and . (This function is known as the divisor function.) Let There is a unique positive integer such that for all positive integers . What is the sum of the digits of
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
1.
2.
3.
4.
5.
6.
7. (i dont remember exactly if it was 8032038 or some other number, so correct me on this)
8. (i posted this at 12:29) lol
9. ????
10.???
Tiebreaks: ???
Estimated Algebra Cutoffs
Top 50%:
3+tiebreaks, 4 guarantees?
Top 20%
5+tiebreaks, 6 guarantees?
Top 10:
8 + tiebreaks, 9 guarantees?
for these lmk if ur opinion differs this is only my opinion
text totally not copied over from wmc (thanks jason <3) Quick Links:
[list=disc]
[*] National: (Sprint) (Target) (Team) (Sprint + Target Submission) (Team Submission) [/*]
[*] Miscellaneous: (Leaderboard) (Private Discussion Forum) [/*]
[/list]
(Above links will release soon.)
----- Eddison Chen (KS '22 '24), Aarush Goradia (CO '24), Ethan Imanuel (NJ '24), Benjamin Jiang (FL '23 '24), Rayoon Kim (PA '23 '24), Jason Lee (NC '23 '24), Puranjay Madupu (AZ '23 '24), Andy Mo (OH '23 '24), George Paret (FL '24), Arjun Raman (IN '24), Vincent Wang (TX '24), Channing Yang (TX '23 '24), and Jefferson Zhou (MN '23 '24) present:
[center]IMAGE[/center]
[center]Image credits to Simon Joeng.[/center]
2024 MATHCOUNTS Nationals alumni from all across the nation have come together to administer the first-ever ELMOCOUNTS Competition, a mock written by the 2024 Nationals alumni given to the 2025 Nationals participants. By providing the next generation of mathletes with free, high quality practice, we're here to boast how strong of an alumni community MATHCOUNTS has, as well as foster interest in the beautiful art that is problem writing!
The tests and their corresponding submissions forms will be released here on Monday, April 21, 2025. The deadline is May 10, 2025. Tests can be administered asynchronously at your home or school, and your answers should be submitted to the corresponding submission form. If you include your AoPS username in your submission, you will be granted access to the private discussion forum on AoPS, where you can discuss the tests even before the deadline.
[list=disc]
[*] "How do I know these tests are worth my time?"
See our credentials at the top of the post - every member of our problem-writing committee is an alumnus of the 2024 MATHCOUNTS National Competition. Additionally, many of us have written problems for previous contests such as WMC.
[/*]
[*] "Who can participate?"
Anyone may participate in any stage of the competition, regardless of age or their previous scores!
[/*]
[*] "How do I sign up?"
Signing up is neither mandatory nor binding, but it adds this thread to your feed for update, as well as shows us support :). You can do so in a reply to this thread by adding your username to the list and incrementing the count.
[/*]
[*] "What if I have multiple students?"
You can administer all of them together, then have each student submit their answers separately. For the Team round (if any, see below), have the captain submit the team's answers once. One school may have as many teams as they like.
[/*]
[*] "What if a problem is ambiguous, incorrect, etc.?"
If you are taking the test and think there is an error in one of the problems, skip the problem and keep going (as you would in an actual competition). After the timer goes off, email us at elmocounts2025@gmail.com (do not spoil it in this thread!).
[/*]
[*] "Will there be solutions?"
Official solutions will be released publicly after the corresponding submission deadline. In the meantime, you can see what others have shared in the private discussion forum. If you're still stuck on one of the problems, feel free to ask in the forum or email us at elmocounts2025@gmail.com and we'd be happy to help.
[/*]
[*] "Will there be a Countdown Round administered?"
If you all are interested in having a Countdown Round administered at the 2025 National Competition, let us know below or in the form - if enough people are interested, we may write a Countdown Round.
[/*]
[/list]
If you have any other questions, feel free to email us at elmocounts2025@gmail.com!
my testing center has a bunch of scratch paper
the proctors just walk around and hand it to people who they see are low on paper
my cm doesn't allow it bc people can put the answers or like formulas in their paper and hide it, he just brings a big box of paper to the test and hands out ~10 to each student
This post has been edited 2 times. Last edited by dbnl, Nov 9, 2024, 6:49 PM
Are you allowed to write down anything on the scratch paper RIGHT before the test? I was thinking of drawing dividers to organize my work (allocate top half for P1-5, allocate bottom half for P6-10, etc), but I'm not sure if that's allowed
Are you allowed to write down anything on the scratch paper RIGHT before the test? I was thinking of drawing dividers to organize my work (allocate top half for P1-5, allocate bottom half for P6-10, etc), but I'm not sure if that's allowed
I do that after I do 1-10 because those problems are usually easy and don't require much thought and I use ~1 piece of scratch paper on the first 10, both sides
This post has been edited 1 time. Last edited by dbnl, Nov 9, 2024, 9:02 PM
Are you allowed to write down anything on the scratch paper RIGHT before the test? I was thinking of drawing dividers to organize my work (allocate top half for P1-5, allocate bottom half for P6-10, etc), but I'm not sure if that's allowed
Yeah what I do is draw graph lines just in case if there is coordinate geometry.
I just bring like 20 ish sheet of paper so that every time I fill a tiny part of the sheet as not to distract myself I just get a new one very eco friendly