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Learn a Fact: 2 x 9

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

Fact Navigator

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2

x9


18

9

x2


18

Move on to other facts:
2
X 8
16
3
X 0
0

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