Learn a Fact: 2 x 5

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

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2

x5


10

5

x2


10

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2
X 4
8
2
X 6
12