olymmath

HMMT 2023 C2

  • Combinatorics
  • Answer

Compute the number of ways to tile a 3×53 \times 5 rectangle with one 1×11 \times 1 tile, one 1×21 \times 2 tile, one 1×31 \times 3 tile, one 1×41 \times 4 tile, and one 1×51 \times 5 tile. (The tiles can be rotated, and tilings that differ by rotation or reflection are considered distinct.)

Dataset text NuminaMath olympiads. Quoted with source.

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40

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