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10 questions
1, 2, 3, _, 5, 6, 7, 8, 9, 10...
1
2
4
8
10, 11, 12, 13, 14, 15, _, 17, 18, 19, 20...
12
14
16
18
20, 21, 22, 23, 24, 25, 26, 27, __, 29, 30...
22
24
26
28
30, 31, 32, 33, 34, __, 36, 37, 38, 39, 40...
31
33
35
37
40, 41, 42, 43, 44, 45, 46, __, 48, 49, 50...
43
45
47
49
50, 51, 52, 53, 54, 55, 56, __, 58, 59, 60...
51
53
56
57
1, 2, 3, 4, 5, 6, 7, 8, _, 10
3
4
6
9
10, 11, 12, 13, 14, __, 16, 17, 18, 19, 20...
10
15
18
19
20, 21, __, 23, 24, 25, 26, 27, 28, 29, 30...
22
24
26
28
51, 52, 53, 54, 55, 56, 57, 58, __, 60
19
29
39
59
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