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10 questions from this quiz
As 2
It is symmetric
Swap 0s and 1s, keep diagonal unchanged
The complete graph KnK_nKn
n(n−1)2\frac{n(n-1)}{2}2n(n−1)
No, it's necessary but not sufficient
5
Graph is definitely non-planar
KnK_nKn if n≥5n \geq 5n≥5
If it has subdivision of K5K_5K5 or K3,3K_{3,3}K3,3
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