Learn a Fact: 2 x 5

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

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2

x5


10

5

x2


10

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2
X 4
8
2
X 6
12