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Learn a Fact: 1 x 9

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

Fact Navigator

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x9


9

9

x1


9

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1
X 8
8
2
X 0
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