Suppose a tree G has exactly one vertex of degree i for each 2<=i<=m and all other vertices have degree 1. How many vertices does G have?
2026-05-05 07:48:29.1777967309
number of vertices a special graph
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$1+2+3+.....+m-3+m-2+m+1=\frac{(m-2)(m-1)}{2}+m+1$