Difference between revisions of "2021 AMC 12B Problems/Problem 3"
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==Video Solution by Hawk Math== | ==Video Solution by Hawk Math== | ||
https://www.youtube.com/watch?v=VzwxbsuSQ80 | https://www.youtube.com/watch?v=VzwxbsuSQ80 | ||
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+ | ==Video Solution by TheBeautyofMath== | ||
+ | https://youtu.be/EMzdnr1nZcE?t=384 | ||
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+ | ~IceMatrix | ||
==See Also== | ==See Also== | ||
{{AMC12 box|year=2021|ab=B|num-b=2|num-a=4}} | {{AMC12 box|year=2021|ab=B|num-b=2|num-a=4}} | ||
{{MAA Notice}} | {{MAA Notice}} |
Revision as of 06:59, 19 February 2021
Contents
Problem
SupposeWhat is the value of
Solution
Subtracting from both sides and taking reciprocals gives
. Subtracting
from both sides and taking reciprocals again gives
. Subtracting
from both sides and taking reciprocals for the final time gives
or
.
~ OlympusHero
Video Solution by Punxsutawney Phil
https://youtube.com/watch?v=qpvS2PVkI8A&t=127s
Video Solution by OmegaLearn (Algebraic Manipulations)
~ pi_is_3.14
Video Solution by Hawk Math
https://www.youtube.com/watch?v=VzwxbsuSQ80
Video Solution by TheBeautyofMath
https://youtu.be/EMzdnr1nZcE?t=384
~IceMatrix
See Also
2021 AMC 12B (Problems • Answer Key • Resources) | |
Preceded by Problem 2 |
Followed by Problem 4 |
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 12 Problems and Solutions |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.