Multiple choices 40/50
Answer (Choose 1 answer)
(See picture)
A. 6
B. None of the other choices is correct
C. 3
Next
D. 9
How many 1s are there in the incident matrix of the graph K3?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40 41
42
43
44 45 46 47
48 49 50
