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35 questions
7×6
42
49
56
7×7
49
81
42
7×8
56
49
42
7×9
62
63
49
5×6
35
40
30
6×6
28
36
35
8×6
42
40
48
8×8
62
64
68
8×9
64
68
72
9×9
81
82
72
6×9
40
54
45
6×8
42
46
48
6×7
40
42
48
6×6
30
34
36
5×7
30
35
40
5×6
25
20
30
4×9
36
28
32
4×8
28
30
32
4×7
24
28
30
4×6
20
24
30
4×5
20
16
18
3×9
27
24
30
3×8
20
24
30
3×7
21
18
24
3×8
24
28
30
3×9
21
27
24
3×6
15
18
20
3×5
25
20
15
3×4
12
20
18
3×4
16
12
10
4×4
16
12
20
3×3
9
6
12
7×8
56
64
49
5×7
30
35
40
5×5
20
25
30