Learn a Fact: 2 x 0

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

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