AMC 10 Step by Step
2022 AMC 10BProblem 1P1-10~1 minPrint

Define xyx\diamond y to be xy|x-y| for all real numbers xx and y.y. What is the value of (1(23))((12)3)?(1\diamond(2\diamond3))-((1\diamond2)\diamond3)?

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Problem © Mathematical Association of America (MAA), American Mathematics Competitions. Reproduced for non-commercial educational use. Solution and commentary are original to this site.