olymmath

HMMT 2020 C4

  • Combinatorics
  • Answer

Given an 8×88 \times 8 checkerboard with alternating white and black squares, how many ways are there to choose four black squares and four white squares so that no two of the eight chosen squares are in the same row or column?

Dataset text NuminaMath olympiads. Quoted with source.

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20736

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