問題詳情
97. Thirty items are arranged in a 6-by-5 array as shown.
Calculate the number of ways to form a set of three distinct items such that no two of the selected items are in the same row or same column.
(A) 200
(B) 760
(C) 1200
(D) 4560
(E) 7200
參考答案
答案：C
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中