Difference between revisions of "2024 AMC 8 Problems/Problem 17"
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==Video Solution 2 (super clear!) by Power Solve== | ==Video Solution 2 (super clear!) by Power Solve== | ||
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+ | ==Video Solution 3 by OmegaLearn.org== | ||
+ | https://youtu.be/UJ3esPnlI5M |
Revision as of 12:56, 26 January 2024
Contents
[hide]Problem
A chess king is said to attack all the squares one step away from it, horizontally, vertically, or diagonally. For instance, a king on the center square of a x grid attacks all other squares, as shown below. Suppose a white king and a black king are placed on different squares of a x grid so that they do not attack each other. In how many ways can this be done?
(A) (B) (C) (D) (E)
==Solution 1== by Math 645
Corners have 5 spots to go and 4 corners so 5*4=20. Sides have 3 spots to go and 4 sides so 3*4=12 20+12=32 in total. E (32) is the answer.
Video Solution 1 by Math-X (First understand the problem!!!)
~Math-X