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Learn a Fact: 1 x 3

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x3


3

3

x1


3

1
X 2
2
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X 4
4
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1
2
x  1
2
3
x  1
3
8
x  0
4
6
x  1
5
0
x  7
6
0
x  3
7
6
x  0
8
1
x  9
9
1
x  7
10
1
x  4
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0
x  5
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1
x  1
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9
x  0
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5
x  1
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1
x  0
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1
x  8
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0
x  2
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4
x  0
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