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Learn a Fact: 2 x 2

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

Fact Navigator

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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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