olymmath

AIME 2024a Problem 8

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Eight circles of radius 3434 are sequentially tangent, and two of the circles are tangent to ABAB and BCBC of triangle ABCABC, respectively. 20242024 circles of radius 11 can be arranged in the same manner. The inradius of triangle ABCABC can be expressed as mn\frac{m}{n}, where mm and nn are relatively prime positive integers. Find m+nm+n. [asy] /* Made by Mathemagician108 */ pair A = (2,1); pair B = (0,0); pair C = (3,0); dot(A^^B^^C); label("AA", A, N); label("BB", B, S); label("CC", C, S); draw(A--B--C--cycle); for(real i=0.62; i<2.7; i+=0.29){ draw(circle((i,0.145), 0.145)); } [/asy]

Dataset text AIME 1983 to 2026. Quoted with source.

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