Learn a Fact: 2 x 4

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

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2

x4


8

4

x2


8

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2
X 3
6
2
X 5
10