1 5,10,17,26,( )
a 30 b43 c 37 d 41
3 1,13,45,97,( )
a 169 b 125 c 137 d 189
4 1,01,2,002,3,0003, ( )…
a 40003 b 4003 c 400004 d 40004
5 2,3,6,36,( )
a 48 b 54 c 72 d 1296
6 3,6,9,( )
a 12 b 14 c 16 d 24
7 1,312,623,( )
a 718 b 934 c 819 d 518
8 8,7,15,22,( )
a 37 b 25 c 44 d 39
9 3,5,9,17,( )
a 25 b 33 c 29 d 37
10 20,31,43,56,( )
a 68 b 72 c 80 d 70
13 144,72,18,3,( )
a 1 b 1/3 c 3/8 d 2
14 1,2,3,5,8,( )
a 15 b 14 c 13 d 12
15 8,11,14,17,( )
a 20 b 19 c 21 d 23
16 3,2,5/3,3/2,( )
a 7/5 b 5/6 c 3/5 d 3/4
17 13,21,34,55,( )
a 67 b 89 c 73 d 83
18 1,1,3/2,2/3,5/4,( )
a 4/5 b 5/7 c 6/7 d 1/5
19 1,4,27,256,( )
a 81 b 56 c 144 d 3125
20 3/8,15/24,35/48,( )
a 25/56 b 53/75 c 63/80 d 75/96
21 0,4/27,16/125,36/343,( )
a 64/729 b 64/523 c 51/649 d 3/512
22 1,2,9,28,( )
a 57 b 68 c 65 d 74
24 2,2,8,72,( )
a 81 b 1152 c 121 d 256
25 23,27,31,( )
a 39 b 41 c 35 d 40
26 9,7,2,5,( )
a -7 b -2 c -3 d 3
27 5.8,4.7,3.5,( )
a 2.1 b 2.2 c 2.3 d 3.1
28 79,21,58,-37,( )
a 75 b 95 c -48 d -67
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