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k a March Highlights and 2025 AoPS Online Class Information
jlacosta   0
Mar 2, 2025
March is the month for State MATHCOUNTS competitions! Kudos to everyone who participated in their local chapter competitions and best of luck to all going to State! Join us on March 11th for a Math Jam devoted to our favorite Chapter competition problems! Are you interested in training for MATHCOUNTS? Be sure to check out our AMC 8/MATHCOUNTS Basics and Advanced courses.

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Do you have plans this summer? There are so many options to fit your schedule and goals whether attending a summer camp or taking online classes, it can be a great break from the routine of the school year. Check out our summer courses at AoPS Online, or if you want a math or language arts class that doesn’t have homework, but is an enriching summer experience, our AoPS Virtual Campus summer camps may be just the ticket! We are expanding our locations for our AoPS Academies across the country with 15 locations so far and new campuses opening in Saratoga CA, Johns Creek GA, and the Upper West Side NY. Check out this page for summer camp information.

Be sure to mark your calendars for the following events:
[list][*]March 5th (Wednesday), 4:30pm PT/7:30pm ET, HCSSiM Math Jam 2025. Amber Verser, Assistant Director of the Hampshire College Summer Studies in Mathematics, will host an information session about HCSSiM, a summer program for high school students.
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[*]March 11th (Tuesday), 4:30pm PT/7:30pm ET, 2025 MATHCOUNTS Chapter Discussion MATH JAM. AoPS instructors will discuss some of their favorite problems from the MATHCOUNTS Chapter Competition. All are welcome!
[*]March 13th (Thursday), 4:00pm PT/7:00pm ET, Free Webinar about Summer Camps at the Virtual Campus. Transform your summer into an unforgettable learning adventure! From elementary through high school, we offer dynamic summer camps featuring topics in mathematics, language arts, and competition preparation - all designed to fit your schedule and ignite your passion for learning.[/list]
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0 replies
jlacosta
Mar 2, 2025
0 replies
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MATHCOUNTS State Competition Thread
ilikemath247365   1
N 2 minutes ago by Andyluo
I'll assume mathcounts state examination is over, but you can tell me to delete this post if I'm wrong:

$\begin{tabular}{c|c|c|c|c}Username & Grade & Score \\ \hline ilikemath247365 & 7 & 34 \\ \end{tabular}$
1 reply
ilikemath247365
7 minutes ago
Andyluo
2 minutes ago
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Basic Maths
JetFire008   10
N 6 minutes ago by maxamc
Find $x$: $\sqrt{9}x=18$
10 replies
JetFire008
Friday at 1:19 PM
maxamc
6 minutes ago
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Chances at nats? Mathcounts
iwillregretthisnamelater   5
N 28 minutes ago by DDCN_2011
Iowa, 38 on chapter, first in written and countdown and I’m just another person asking for nats chances.
5 replies
iwillregretthisnamelater
40 minutes ago
DDCN_2011
28 minutes ago
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Menu
pascal_1623   10
N 33 minutes ago by jkim0656
On a restaurant, there are three appetizers, and four main courses. How many different dinners can be ordered if each dinner consists of one appetizer and one main course?
10 replies
pascal_1623
Aug 22, 2005
jkim0656
33 minutes ago
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No more topics!
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squares in dots - MATHCOUNTS challenge problem
rrusczyk   5
N Jun 17, 2005 by Barnacle
. . . . .
. . . . .
. . . . .
. . . . .

(That should be a 4x5 grid of dots.) Assuming each point is exactly one unit from its nearest neighbors, how many squares can be formed by connecting groups of four points?
5 replies
rrusczyk
May 27, 2003
Barnacle
Jun 17, 2005
J
squares in dots - MATHCOUNTS challenge problem
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rrusczyk
16191 posts
rrusczyk
#1 h  May 27, 2003, 4:59 PM • 2 Y
Y by Adventure10, Mango247
. . . . .
. . . . .
. . . . .
. . . . .

(That should be a 4x5 grid of dots.) Assuming each point is exactly one unit from its nearest neighbors, how many squares can be formed by connecting groups of four points?
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Chinaboy
765 posts
Chinaboy
#2 h  May 28, 2003, 3:52 PM • 2 Y
Y by Adventure10, Mango247
Ok, then, there are
12 1x1 squares
6 2x2 squares
2 3x3 squares
_______________
20 squares

But then, there are squares that's not straight, they go diagonally.
I counted:
6 sqrt(2)xsqrt(2) squares
4 sqrt(5)xsqrt(5) squares
________________________
10 squares

20 + 10 = 30 squares

My answer: 30 squares (Please tell me if I'm wrong)
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roosevelt
4 posts
roosevelt
#3 h  May 29, 2003, 1:10 AM • 2 Y
Y by Adventure10, Mango247
I got the same answer... :P
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Syntax Error
1443 posts
Syntax Error
#4 h  May 29, 2003, 5:38 PM • 2 Y
Y by Adventure10, Mango247
i get 30 squares also, if it means anything by now that is. :shock:
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rrusczyk
16191 posts
rrusczyk
#5 h  Jun 2, 2003, 10:24 PM • 3 Y
Y by Adventure10, Mango247, Celly6
Yep, 30... Next problem...
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Barnacle
411 posts
Barnacle
#6 h  Jun 17, 2005, 6:28 PM • 2 Y
Y by Adventure10, Mango247
20 normal, 10 diagonal = 30.

im 2 years late to solve this problem, but whatever im just going through all of them :lol:
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