Learn a Fact: 3 x 0

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

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