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Learn a Fact: 2 x 9

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

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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