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Which complete graph is not present in minor of Outer Planar Graph?

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in Data Structures & Algorithms II by (89.2k points)
Which complete graph is not present in minor of Outer Planar Graph?

(a) K3, 3

(b) K3, 1

(c) K3, 2

(d) K1, 1

The question was asked in an online interview.

This intriguing question comes from Bipartite Graphs topic in chapter Bipartite Graphs of Data Structures & Algorithms II

1 Answer

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Best answer
The correct option is (c) K3, 2

Best explanation: Minor graph is formed by deleting certain number of edges from a graph or by deleting certain number off vertices from a graph. Hence Outer Planar graph cannot contain K3, 2 as a minor graph.

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