Learn a Fact: 3 x 1

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

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