Learn a Fact: 2 x 0

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

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