Learn a Fact: 2 x 5

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

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2

x5


10

5

x2


10

Move on to other facts:
2
X 4
8
2
X 6
12