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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
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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]
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0 replies
jlacosta
Apr 2, 2025
0 replies
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0!??????
wizwilzo   58
N 43 minutes ago by valisaxieamc
why is 0! "1" ??!
58 replies
wizwilzo
Jul 6, 2016
valisaxieamc
43 minutes ago
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Nats 2024 cutoff Map
MathyMathMan   19
N an hour ago by valisaxieamc
2024 MATHCOUNTS Nats Cutoff Map

Greetings!

I should first and foremost thank those who helped with this project along the way. This idea is fully inspired by past South Dakota alumni that attended my school. The original ideas were created by @anser and @techguy2. I would also like to thank @peace09 for agreeing to collaborate with me on the scores and ratings during the 2024 state competitions throughout the country.

@peace09's post Cutoffs and Scores

Please state your state and cutoff score. (4th place) You can also provide the 3rd, 2nd, and 1st place scores as well. People from different territories can also provide their state's scores as well. I will try my best to keep this map updated until we get all the scores. You are also free to discuss states and nationals stuff too if you want. :)

(Btw congratulations to everyone who made nationals, I hope to see you guys there too!)

Nats qualification scores
19 replies
1 viewing
MathyMathMan
Apr 4, 2024
valisaxieamc
an hour ago
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Geometry
BQK   5
N an hour ago by valisaxieamc
Help me, Why geometry is so difficult to learn
5 replies
BQK
Yesterday at 2:58 PM
valisaxieamc
an hour ago
J
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Books for AMC 10
GallopingUnicorn45   1
N an hour ago by Soupboy0
Hi all,

So I'm in 4th grade, and I'm having a go at AMC 10 and I've got some questions.
First, how many questions are needed to get Achievement Roll and AIME?
Second, what should I grind to prepare? I took the Intro to Algebra, Counting & Probability, and Number Theory courses already, completed those three books and will be starting the Intro to Geometry book soon. I'm planning to grind the Competition Math for Middle School and try to add in Volume 1: The Basics along with the three books that I already finished, plus geometry. Is there anything else to prepare with besides Alcumus and past papers and those books?

Thanks!
1 reply
GallopingUnicorn45
2 hours ago
Soupboy0
an hour ago
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No more topics!
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max number of candies
orangefronted   5
N Apr 14, 2025 by EthanNg6
A store sells a strawberry flavoured candy for 1 dollar each. The store offers a promo where every 4 candy wrappers can be exchanged for one candy. If there is no limit to how many times you can exchange candy wrappers for candies, what is the maximum number of candies I can obtain with 100 dollars?
5 replies
orangefronted
Apr 3, 2025
EthanNg6
Apr 14, 2025
J
max number of candies
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orangefronted
864 posts
orangefronted
#1 h  Apr 3, 2025, 6:43 AM
Y by
A store sells a strawberry flavoured candy for 1 dollar each. The store offers a promo where every 4 candy wrappers can be exchanged for one candy. If there is no limit to how many times you can exchange candy wrappers for candies, what is the maximum number of candies I can obtain with 100 dollars?
This post has been edited 1 time. Last edited by orangefronted, Apr 3, 2025, 6:44 AM
Reason: typo
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BAM10
98 posts
BAM10
#2 h  Apr 3, 2025, 10:51 AM • 2 Y
Y by Didi_Chua, orangefronted
133. I'm pretty sure
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RollingPanda4616
235 posts
RollingPanda4616
#3 h  Apr 3, 2025, 11:33 AM
Y by
hint
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fruitmonster97
2481 posts
fruitmonster97
#5 h  Apr 3, 2025, 1:24 PM • 2 Y
Y by orangefronted, sangriabeaver5
Buy 100. Trade in 25 4-packs of wrappers for 25 extra candies. Trade in 6 4-packs of wrappers for 6 more candies. We currently have 7 wrappers. Trade 4 in for another candy, and the remaining wrapper, combined with the 3 remaining, yields one more candy.

Our answer is $100+25+6+1+1=\boxed{133}.$
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aops-g5-gethsemanea2
3453 posts
aops-g5-gethsemanea2
#6 h  Apr 4, 2025, 4:05 PM
Y by
orangefronted wrote:
A store sells a strawberry flavoured candy for 1 dollar each. The store offers a promo where every 4 candy wrappers can be exchanged for one candy. If there is no limit to how many times you can exchange candy wrappers for candies, what is the maximum number of candies I can obtain with 100 dollars?

is this from Sipnayan grade school contest this year?
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EthanNg6
25 posts
EthanNg6
#7 h  Apr 14, 2025, 3:23 AM • 1 Y
Y by pythagorazz
I think that it is 133
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