Learn a Fact: 2 x 4

1
9
x  1
2
1
x  6
3
5
x  0
4
7
x  0
5
8
x  1
6
2
x  3
7
8
x  0
8
0
x  9
9
5
x  1
10
0
x  6
11
1
x  2
12
4
x  0
13
1
x  1
14
3
x  0
15
4
x  1
16
3
x  1
17
4
x  2
18
7
x  1
19
0
x  2
20
2
x  2

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2

x4


8

4

x2


8

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2
X 3
6
2
X 5
10