Difference between revisions of "2024 AMC 8 Problems/Problem 4"
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| − | + | 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦⬛⬛🟦🟦🟦⬛⬛🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛🟦⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 | |
| − | + | 🟦⬛⬛⬛🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦⬛⬛🟦 | |
| − | + | 🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦 | |
| − | + | 🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦 | |
| − | + | 🟦🟦⬛⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛⬛🟦🟦 | |
| − | + | 🟦🟦🟦⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛🟦🟦🟦 | |
| − | + | 🟦🟦🟦🟦⬛⬛⬛⬛🟩🟩⬛⬜⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬜⬛🟩🟩⬛⬛⬛⬛🟦🟦🟦🟦 | |
| − | + | 🟦🟦🟦⬛⬛⬛⬛⬛⬛🟩⬛⬛⬛⬛🟩⬛⬛⬛⬛⬛⬛🟩⬛⬛⬛⬛🟩⬛⬛⬛⬛⬛⬛🟦🟦🟦 | |
| + | 🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛🟩⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛🟩⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦 | ||
| + | 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦 | ||
==wapjgpoaewhgawehgoihewoighoiwhg[owrh[oigawh[oghw[aw== | ==wapjgpoaewhgawehgoihewoighoiwhg[owrh[oigawh[oghw[aw== | ||
Revision as of 21:50, 7 February 2024
Contents
- 1 Problem
- 2 wapjgpoaewhgawehgoihewoighoiwhg[owrh[oigawh[oghw[aw
- 3 Solution 3
- 4 Solution 4
- 5 Video Solution 1 (easy to digest) by Power Solve
- 6 Video Solution by Math-X (First fully understand the problem!!!)
- 7 Video Solution by NiuniuMaths (Easy to understand!)
- 8 Video Solution 2 by SpreadTheMathLove
- 9 Video Solution by CosineMethod [🔥Fast and Easy🔥]
- 10 Video Solution by Intersigation
- 11 See Also
Problem
When Yunji added all the integers from 
to 
, she mistakenly left out a number. Her incorrect sum turned out to be a square number. What number did Yunji leave out?
🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦⬛⬛🟦🟦🟦⬛⬛🟦🟦🟦🟦⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛🟦⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 🟦⬛⬛⬛🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦⬛⬛🟦 🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦 🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦 🟦🟦⬛⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛⬛🟦🟦 🟦🟦🟦⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛⬛⬛⬛🟦🟦🟦 🟦🟦🟦🟦⬛⬛⬛⬛🟩🟩⬛⬜⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬜⬛🟩🟩⬛⬛⬛⬛🟦🟦🟦🟦 🟦🟦🟦⬛⬛⬛⬛⬛⬛🟩⬛⬛⬛⬛🟩⬛⬛⬛⬛⬛⬛🟩⬛⬛⬛⬛🟩⬛⬛⬛⬛⬛⬛🟦🟦🟦 🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛🟩⬛⬛🟩🟩⬛⬛⬛⬛⬛⬛🟩🟩⬛⬛🟩⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦 🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦⬛⬛⬛⬛⬛⬛🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦 🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦🟦
wapjgpoaewhgawehgoihewoighoiwhg[owrh[oigawh[oghw[aw
Roses are red
violets are blue
Grass is green
Chair
Solution 3
Recall from AMC12A 2022 Problem 16, that 
. Hence removing works and our answer is 
.
-iamcalifornia'sresidentidiot
Solution 4
using the theory of relativity, 1+5 is 4 so therefore Mark Zuckerburg is a lizard person and the earth is actually flat, which proves the pythagorean theorom
-by random_uwu_gamer_girl
BAN ME I DARE YOU I ACTUALLY DARE
Video Solution 1 (easy to digest) by Power Solve
https://youtu.be/HE7JjZQ6xCk?si=sTC7YNSmfEOMe4Sn&t=179
Video Solution by Math-X (First fully understand the problem!!!)
https://youtu.be/BaE00H2SHQM?si=9ZUxEGmGam7il9xr&t=907
~Math-X
Video Solution by NiuniuMaths (Easy to understand!)
https://www.youtube.com/watch?v=Ylw-kJkSpq8
~NiuniuMaths
Video Solution 2 by SpreadTheMathLove
https://www.youtube.com/watch?v=L83DxusGkSY
Video Solution by CosineMethod [🔥Fast and Easy🔥]
https://www.youtube.com/watch?v=9v5q5DxeriM
Video Solution by Intersigation
https://youtu.be/ktzijuZtDas&t=232
See Also
| 2024 AMC 8 (Problems • Answer Key • Resources) | ||
| Preceded by Problem 3 |
Followed by Problem 5 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| All AJHSME/AMC 8 Problems and Solutions | ||
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. 
