Learn a Fact: 3 x 0

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

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