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1. Let D30 = {1, 2, 3, 4, 5, 6, 10, 15, 30} and relation I be partial ordering on D30. The all lower bounds of 10 and 15 respectively are
1,3
1,5
1,3,5
None of these
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2. Hasse diagrams are drawn for
partially ordered sets
lattices
boolean Algebra
none of these
3. A self-complemented, distributive lattice is called
Boolean algebra
Modular lattice
Complete lattice
Self dual lattice
4. Let D30 = {1, 2, 3, 5, 6, 10, 15, 30} and relation I be a partial ordering on D30. The lub of 10 and 15 respectively is
30
15
10
6
5. Let X = {2, 3, 6, 12, 24}, and ≤ be the partial order defined by X ≤ Y if X divides Y. Number of edges in the Hasse diagram of (X, ≤ ) is
3
4
5
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