CombinatoricsDifficulty 3.0AMC 10/12Find the answerCanada
A 3×3 grid is filled with the digits 1,2 and 3 so that each number appears once in each row and column. Two different examples are 132213321 and 321213132. How many different ways are there of filling the grid?
(A) 14 (B) 12 (C) 10 (D) 8 (E) 6
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