Difference between revisions of "2021 AMC 10A Problems/Problem 1"
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~MRENTHUSIASM | ~MRENTHUSIASM | ||
| − | ==Video Solution (Lightening Fast)== | + | ==Video Solution 1 (Lightening Fast)== |
https://youtu.be/cAMg15KhK6E | https://youtu.be/cAMg15KhK6E | ||
~ Education, the Study of everything | ~ Education, the Study of everything | ||
| − | + | ==Video Solution 2== | |
| − | |||
| − | ==Video Solution == | ||
https://youtu.be/cAMg15KhK6E | https://youtu.be/cAMg15KhK6E | ||
| − | ==Video Solution | + | ==Video Solution 3 (Very Very Quick Computation) == |
https://www.youtube.com/watch?v=m0_UMI2mnZs&list=PLexHyfQ8DMuKqltG3cHT7Di4jhVl6L4YJ&index=2 | https://www.youtube.com/watch?v=m0_UMI2mnZs&list=PLexHyfQ8DMuKqltG3cHT7Di4jhVl6L4YJ&index=2 | ||
~North America Mathematic Contest Go Go Go | ~North America Mathematic Contest Go Go Go | ||
| − | ==Video Solution | + | ==Video Solution 4 (Quick Computation) == |
https://youtu.be/C3n2hgBhyXc?t=37 | https://youtu.be/C3n2hgBhyXc?t=37 | ||
~ThePuzzlr | ~ThePuzzlr | ||
| − | == Video Solution (Arithmetic Computation) == | + | == Video Solution 5 (Arithmetic Computation) == |
https://youtu.be/0VvM_f-IDvE | https://youtu.be/0VvM_f-IDvE | ||
~ pi_is_3.14 | ~ pi_is_3.14 | ||
| − | ==Video Solution | + | ==Video Solution 6== |
https://youtu.be/4dkzuRHJieQ | https://youtu.be/4dkzuRHJieQ | ||
~savannahsolver | ~savannahsolver | ||
| − | ==Video Solution | + | ==Video Solution 7== |
https://youtu.be/50CThrk3RcM | https://youtu.be/50CThrk3RcM | ||
~IceMatrix | ~IceMatrix | ||
| − | ==Video Solution (Problems 1-3)== | + | ==Video Solution 8 (Problems 1-3)== |
https://youtu.be/CupJpUzKPB0 | https://youtu.be/CupJpUzKPB0 | ||
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== See Also == | == See Also == | ||
| − | |||
{{AMC10 box|year=2021|ab=A|before=First Problem|num-a=2}} | {{AMC10 box|year=2021|ab=A|before=First Problem|num-a=2}} | ||
{{MAA Notice}} | {{MAA Notice}} | ||
Revision as of 19:00, 26 May 2021
Contents
- 1 Problem
- 2 Solution 1
- 3 Solution 2
- 4 Video Solution 1 (Lightening Fast)
- 5 Video Solution 2
- 6 Video Solution 3 (Very Very Quick Computation)
- 7 Video Solution 4 (Quick Computation)
- 8 Video Solution 5 (Arithmetic Computation)
- 9 Video Solution 6
- 10 Video Solution 7
- 11 Video Solution 8 (Problems 1-3)
- 12 See Also
Problem
What is the value of ![\[(2^2-2)-(3^2-3)+(4^2-4)\]](http://latex.artofproblemsolving.com/f/b/f/fbf9a3889b146c23eb653b9dc16255c03a229dfe.png)
Solution 1
This corresponds to 
-happykeeper
Solution 2
We have
~MRENTHUSIASM
Video Solution 1 (Lightening Fast)
~ Education, the Study of everything
Video Solution 2
Video Solution 3 (Very Very Quick Computation)
https://www.youtube.com/watch?v=m0_UMI2mnZs&list=PLexHyfQ8DMuKqltG3cHT7Di4jhVl6L4YJ&index=2 ~North America Mathematic Contest Go Go Go
Video Solution 4 (Quick Computation)
https://youtu.be/C3n2hgBhyXc?t=37 ~ThePuzzlr
Video Solution 5 (Arithmetic Computation)
~ pi_is_3.14
Video Solution 6
~savannahsolver
Video Solution 7
~IceMatrix
Video Solution 8 (Problems 1-3)
~MathWithPi
See Also
| 2021 AMC 10A (Problems • Answer Key • Resources) | ||
| Preceded by First Problem |
Followed by Problem 2 | |
| 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 AMC 10 Problems and Solutions | ||
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. 
