Learn a Fact: 2 x 0

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

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