olymmath

AIME 2021b Problem 3

  • Paper
  • Answer

Find the number of permutations x1,x2,x3,x4,x5x_1, x_2, x_3, x_4, x_5 of numbers 1,2,3,4,51, 2, 3, 4, 5 such that the sum of five products x1x2x3+x2x3x4+x3x4x5+x4x5x1+x5x1x2x_1x_2x_3 + x_2x_3x_4 + x_3x_4x_5 + x_4x_5x_1 + x_5x_1x_2 is divisible by 33.

Dataset text AIME 1983 to 2026. Quoted with source.

Show the answer

80

Solutions

No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.

Add a solution

Locator aime/2021b/p3 · Tag WZD05T08SF · Edit this page on GitHub · Keys: j next, k previous