Question: Pls Help 1. Recall that a tree is a connected graph that has no cycles. how that every tree can be colored with two colors

Pls Help 1. Recall that a tree is a connected graph

Pls Help

1. Recall that a tree is a connected graph that has no cycles. how that every tree can be colored with two colors so that no two adjacent vertices have the same color. Show that any graph consisting of a single cycle, with an odd number of vertices, requires exactly three colors to color it so that no two adjacent vertices have the same color. That is, the coloring cannot be done with two colors, and it can be done with three

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