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Omni-MATH / Which letter will go in the square marked with * in the grid where each of the letters A, B, C, D, and E appears exactly once in each row and column?

Problem

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problem

Which letter will go in the square marked with $*$ in the grid where each of the letters A, B, C, D, and E appears exactly once in each row and column?
Plain-text mathematical notation (without MathML)
Which letter will go in the square marked with $*$ in the grid where each of the letters A, B, C, D, and E appears exactly once in each row and column?
Original LaTeX notation
Which letter will go in the square marked with $*$ in the grid where each of the letters A, B, C, D, and E appears exactly once in each row and column?

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Source and history

task_id
ce1d5a2a-a481-513c-b43e-4592de75effb
task_key
test--ce1d5a2a-a481-513c-b43e-4592de75effb
task_revision_id
1
config / split
/ test

Official source

initial import