Learn a Fact: 3 x 7

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

Fact Navigator

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3

x7


21

7

x3


21

Move on to other facts:
3
X 6
18
3
X 8
24