Preparing for Higher AIME+

by PhoenixMathClub, Apr 19, 2025, 1:51 PM

Hello, I am going to be a 7th grader next year and I really want to qualify for USAJMO in 8th grade, so far I have these goals reached

1. AMC 10 Honor Roll A and B 2025
2. AMC 8 DHR and HR
3. AIME 3 :(

This year on AIME something happened and I got a 3 :( on the AMC's I got a 105 on AMC 10 A and I got a 114 on AMC 10 B. I want to improve mostly on AIME but since the AMC 10 is coming up quicker what would you guys recommend for getting 110+ on both of the AMC 10's and getting a 6+ on AIME? So far I am only doing Alcumus and have no books so far.... Checking the table of contents on the books Alcumus provides the same topics. I was thinking to take WOOT 1 and AMC 10 Problem Series.

Weird Similarity

by mithu542, Apr 18, 2025, 6:03 PM

Is it just me or are the 2023 national sprint #21 and 2025 state target #4 strangely similar?
2023 Natioinal Sprint #21 wrote:
A right triangle with integer side lengths has perimeter $N$ feet and area $N$ ft^2. What is the arithmetic mean of all possible values of $N$?
2025 State Target #4 wrote:
Suppose a right triangle has an area of 20 cm^2 and a perimeter of 40 cm. What is
the length of the hypotenuse, in centimeters?
This post has been edited 2 times. Last edited by mithu542, Yesterday at 6:04 PM

simplify inequality

by ngelyy, Apr 18, 2025, 2:59 AM

Geometry Transformation Problems

by ReticulatedPython, Apr 17, 2025, 3:46 PM

Problem 1:
A regular hexagon of side length $1$ is rotated $360$ degrees about one side. The space through which the hexagon travels forms a solid. Find the volume of this solid.

Problem 2:

A regular octagon of side length $1$ is rotated $360$ degrees about one side. The space through which the octagon travels through forms a solid. Find the volume of this solid.

Source:Own

Hint

Useful Formulas
This post has been edited 10 times. Last edited by ReticulatedPython, 6 hours ago

2025 Mathcounts Countdown Practice

by HKIS-Math, Apr 17, 2025, 1:12 AM

Date & Time:
Sunday April 20th, 2025, 6:30pm EDT (5:30pm CDT, 3:30pm PDT)
The total duration is expected to be 3.5~4.5 hours.

Host: Dr. Jiangang Yao
Dr. Yao was fascinated with mathematics as a child and started his involvement with mathematical olympiad since then. He won the gold medal with full marks in the 35th International Mathematical Olympiad and got math PhD degree from UC Berkeley. He has been the coach for mathematical olympiad at various levels for 30 years, and has written a few popular mathematical olympiad books in Chinese.

Official Participants:
Students who have been invited to the 2025 MathCounts National Competition. Every student will receive a unique three-digit number after registration so that participation can be anonymous, though participants are welcome to show real names as well.

Guests:
Math fans who want to solve interesting math olympiad problems.

Schedule:
6:30pm ~7:30pm: 12 problems with difficulty levels similar to Mathcounts National Sprint and Target will be presented and discussed, and official participants will be given points based on speed (10 pts for the first correct answer, 9pts for 2nd correct answer, etc, 1pt for 10th correct answer.)

7:45~9:00 pm: Top 12 official participants will be identified from the first round to attend the 1-1 matchups. (#12 v.s. #5 with winner A, #11 v.s. #6 with winner B, #10 v.s. #7 with winner C, #9 v.s. #8 with winner D, #4 v.s. A, #3 v.s. B, #2 v.s. C, #1 v.s. D). In each matchup, 5 questions will be presented and the participant who first successfully gets 3 questions correct is the winner. In this round, 5x8 =40 problems will be played.

9:15~10:00pm: Two semi-finals, bronze determination, and final. Each 1-1 matchup will have 7 questions, and the participant who first successfully answers 4 questions is the winner. In this round, 4x7=28 problems will be played. The Top 4 contestants will receive awards.

All guests can submit the answers to all the questions as well. Those who submitted correct answers fast will be appraised.

2022 40 mathletes, 2023 64 mathlets, and 2024 99 mathlets for Mathcounts National attended this practice. We are looking forward to have more students participate this year.

Here is the link for registration:
https://forms.gle/xoRNMLrRnn7KjFiUA

2500th post

by Solocraftsolo, Apr 16, 2025, 3:09 PM

i keep forgetting to do these...


2500 is cool.

i am not very sentimental so im not going to post a math story or anything.

here are some problems though

p1p2p3

p4
This post has been edited 5 times. Last edited by Solocraftsolo, Apr 16, 2025, 3:40 PM

Website to learn math

by hawa, Apr 9, 2025, 2:52 AM

Hi, I'm kinda curious what website do yall use to learn math, like i dont find any website thats fun to learn math
L

Camp Conway acceptance

by fossasor, Feb 20, 2025, 3:55 AM

Hello! I've just been accepted into Camp Conway, but I'm not sure how popular this camp actually is, given that it's new. Has anyone else applied/has been accepted/is going? (I'm trying to figure out to what degree this acceptance was just lack of qualified applicants, so I can better predict my chances of getting into my preferred math camp.)
L

Bogus Proof Marathon

by pifinity, Mar 12, 2018, 7:33 PM

Hi!
I'd like to introduce the Bogus Proof Marathon.

In this marathon, simply post a bogus proof that is middle-school level and the next person will find the error. You don't have to post the real solution :P

Use classic Marathon format:
[hide=P#]a1b2c3[/hide]
[hide=S#]a1b2c3[/hide]


Example posts:

P(x)
S(x)
P(x+1)
Let's go!! Just don't make it too hard!
This post has been edited 3 times. Last edited by pifinity, Mar 12, 2018, 7:40 PM

0!??????

by wizwilzo, Jul 6, 2016, 5:35 PM

why is 0! "1" ??!
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