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Graph Theory
easy
0:00.0
What is the number of edges in a star graph
S
n
S_n
S
n
with
n
n
n
leaves?
A
n
n
n
B
n
−
1
n-1
n
−
1
C
n
+
1
n+1
n
+
1
D
2
n
2n
2
n
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