Cho tập A= {a, b, c, d}, hỏi quan hệ nào trong số các quan hệ trên A dưới đây có tính phản đối xứng?

A. R= {(1, 1), (2, 2), (3, 3),(4, 4), (5, 5), (6, 6), (1, 3), (3,1),(1, 5), (5, 1),(2, 4), (4, 2), (2,6), (6,2), (3,5), (5,3), (4,6), (6,4)}

B. R= {(1, 1), (2, 2), (3, 3),(4, 4), (5, 5), (6, 6), (3,1),(5, 1), (4, 2), (6,2), (5,3), (6,4)}

C. R= {(1, 3), (3,1),(1, 5), (5, 1),(2, 4), (4, 2), (2,6), (6,2), (3,5), (5,3), (4,6), (6,4)}

D. R= {( (3,1), (5, 1), (4, 2), (6,2), (5,3), (6,4)}

A. \[\left[ {\begin{array}{*{20}{c}}1&0&1&0&0\\0&1&1&0&0\\1&1&1&0&0\\0&0&0&1&0\\0&0&0&0&1\end{array}} \right]\]

B. \[\left[ {\begin{array}{*{20}{c}}1&0&0&0&0\\0&1&1&0&0\\0&1&1&0&0\\0&0&0&1&0\\0&0&0&0&1\end{array}} \right]\]

C. \[\left[ {\begin{array}{*{20}{c}}1&1&0&0&0\\1&1&0&0&0\\0&0&1&1&0\\0&0&1&1&0\\0&0&0&0&1\end{array}} \right]\]

D. \[\left[ {\begin{array}{*{20}{c}}1&0&0&0&0\\0&1&1&0&0\\0&1&1&1&0\\0&0&1&1&0\\0&0&0&0&1\end{array}} \right]\]

A. {(a, a), (b, b), (c, c), (d, d), (a, b), (a, c), (a, d)}

B. {(a, a), (b, b), (c, c), (d, d), (a, b), (b, a)}

C. {(a, a), (a, c), (c, a), (c, c), (c, d), (d, c), (d, d)}

D. {(a, a), (b, b), (c, c), (d, d) , (c, d), (d, c), (d, a), (b, d)}

A. {(1,1),(2,2),(3,3),(4,4),(5,5),(2,3),(3,2),(2,4),(4,2),(4,5),(5,4)}

B. {(1,1),(2,2),(3,3),(4,4),(5,5),(2,3),(3,2),(3,4),(4,3),(4,5),(5,4)}

C. {(1,1),(2,2),(3,3),(4,4),(5,5),(2,3),(3,2),(3,5),(5,3),(4,5),(5,4)}

D. {(1,1),(2,2),(3,3),(4,4),(5,5),(2,4),(4,2),(3,4),(4,3),(4,5),(5,4)}

A. Phản xạ

B. Đối xứng

C. Bắc cầu

D. Phản đối xứng

A. {(11, 12), (11, 14), (12, 13), (12, 15)}

B. {(11, 11), (12, 12), (13, 13), (14,14), (15,15), (11, 12), (11, 14), (12, 13), (12, 15)}

C. {(11, 12), (12, 11), (11, 14), (14, 11), (12, 15), (15, 12)}

D. {(11, 12), (12, 11), (11, 14), (14, 11), (12, 15), (15, 12), (13, 14), (14, 13), (12, 13), (13, 12), (14, 15), (15, 14)}