Learn a Fact: 2 x 0

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

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