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Learn a Fact: 2 x 2

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

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2

x2


4

2

x2


4

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2
X 1
2
2
X 3
6

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