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Q. |
A partial order ≤ is defined on the set S = {x, b1, b2, … bn, y} as x ≤ bi for all i and bi ≤ y for all i, where n ≥ 1. The number of total orders on the set S which contain the partial order ≤ is |
A. | n+4 |
B. | n2 |
C. | n! |
D. | 3 |
Answer» C. n! |
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