Learn a Fact: 3 x 3

1
6
x  0
2
2
x  8
3
2
x  6
4
7
x  2
5
2
x  7
6
2
x  2
7
5
x  2
8
2
x  5
9
9
x  2
10
4
x  2
11
3
x  3
12
3
x  3
13
3
x  2
14
8
x  2
15
2
x  4
16
2
x  2
17
1
x  2
18
6
x  2
19
2
x  9
20
2
x  3

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3

x3


9

3

x3


9

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3
X 2
6
3
X 4
12