1) 32, 132, 232, 332, ... a) an = an-1 + 99 b) an = an-1 + 100 c) an = an-1 - 99 d) an = an-1 + 98 2) 24, 22, 20, 18, ... a) an = an-1 - 2 b) an = an-1 + 1 c) an = an-1 + 2 d) an = an-1 - 1 3) 31, 28, 25, 22, ... a) an = an-1 + 3 b) an = an-1 - 2 c) an = an-1 + 2 d) an = an-1 - 3 4) 31, 34, 37, 40, ... a) an = an-1 + 5 b) an = an-1 + 3 c) an = an-1 - 5 d) an = an-1 - 31 5) 28, 36, 44, 52, ... a) an = an-1 + 8 b) an = an-1 - 8 c) an = an-1 + 28 d) an = an-1 - 4 6) 11, 211, 411, 611, ... a) an = an-1 + 202 b) an = an-1 + 200 c) an = an-1 + 201 d) an = an-1 - 200 7) 6, 13, 20, 27, ... a) an = an-1 + 7 b) an = an-1 - 7 c) an = an-1 + 6 d) an = an-1 + 27 8) -19, 1, 21, 41, ... a) an = an-1 - 20 b) an = an-1 + 20 c) an = an-1 - 19 d) an = an-1 + 1 9) -1, 1, 3, 5, ... a) an = an-1 - 4 b) an = an-1 + 4 c) an = an-1 + 2 d) an = an-1 - 2 10) 38, 46, 54, 62, ... a) an = an-1 - 6 b) an = an-1 + 6 c) an = an-1 + 8 d) an = an-1 + 9 11) 34, 44, 54, 64, ... a) an = 53 - 9n b) an = 54 - 10n c) an = 34 + 10n d) an = 24 + 10n 12) 20, 17, 14, 11, ... a) an = 22 - 2n b) an = 23 - 3n c) an = 24 - 2n d) an = 25 - 3n 13) 19, 26, 33, 40, ... a) an = 13 + 6n b) an = 19 + 6n c) an = 25 + 6n d) an = 12 + 7n 14) 36, 32, 28, 24, ... a) an = 40 - 5n b) an = 41 - 5n c) an = 40 - 4n d) an = 38 - 5n 15) 12, 8, 4, 0, ... a) an = 14 - 4n b) an = 13 - 3n c) an = 16 - 4n d) an = 12 - 2n 16) 28, 25, 22, 19, ... a) an = 32 - 4n b) an = 27 - 3n c) an = 31 - 3n d) an = 28 - 4n 17) 22, 12, 2, -8, ... a) an = 33 - 10n b) an = 13 + 10n c) an = 15 + 8n d) an = 32 - 10n 18) 39, 47, 55, 63, ... a) an = 40 + 8n b) an = 31 + 8n c) an = 39 + 8n d) an = 38 + 10n 19) 13, 16, 19, 22, ... a) an = 12 - 3n b) an = 14 - 3n c) an = 8 + 3n d) an = 10 + 3n 20) 18, 25, 32, 39, ... a) an = 11 + 7n b) an = 13 + 5n c) an = 15 + 3n d) an = 18 + 3n

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