The first three terms of an=3n+2, 5,8,11,..., 5,8,12,..., 6,8,11,..., 6,8,12,..., 5,8,14,..., 6,8,14,..., The first three terms of an=(-1)n(n+3), -4,5,-6,..., 4,5,6,..., -4,-5,-6,..., 4,-5,6,..., 3,4,5,..., -3,4,-5,..., Given a1=7 where an=an-1+5 for n>1, the first three terms are, 7,12,17,..., 12,17,22,..., 7,17,27,..., 7,12,15,..., -7,-12,-17,..., 7,12,22,.., Given a1=200 and d= - 20. The first three terms are, 200,220,240,..., 200,180,160,..., 260,240,220,..., 200,240,280,..., Given a1= - 8 and d=5. The first three terms are, -8,-3,2,..., 8,13,21,..., -8,-13,-21,..., -8,3,2,..., -8,3,-2,..., 8,3,2,..., Find a16 if a1=9 and d=2, 39, 36, 33, 32, 37, 38, Find a50 if a1=7and d=5, 252, 225, 255, 522, 525, 552, Find the sum of the first 20 terms of the arithmetic sequence: 4, 10, 16, 22, …, 1220, 1022, 1202, 1002, 1200, 1020, Find the sum of the first 25 terms of the arithmetic sequence: 7, 19, 31, 43, …, 3775, 3757, 3575, 3557, 3777, 3577, Find the sum of the first 50 terms of the arithmetic sequence: -15, -9, -3, 3, …, 6600, 6060, 6660, 6069, 6006, 6666, Arithmetic mean between 52 and 354, 203, 202, 230, 223, 222, 200, Arithmetic mean between -32 and 78, 23, 32, 22, 33, 20, 30, The first three terms of geometric series; a1=5,r=3, 5,15,45,..., 5,20,45,..., 5,15,30,..., 5,15,25,..., 5,15,55,..., 5,25,45,..., Find a8 when a1=1,000,000 and d=0.1, 0.1, 0.01, 0.001, 10, 100, 0.11, Find the sum of the first 12 terms of the geometric sequence: 2, 6, 18, 54, …, 531440, 531404, 531444, 513440, 531044, 513404, Find the sum of the first 11 terms of the geometric sequence: 3, -6, 12, -24, …, 2049, 2409, 2904, 2094, 2490, 2940, Find the geometric mean between 5 and 34, sqrt(170), 170, sqrt(160), 19.5, sqrt(19.5), sqrt(39), Find the geometric mean between 10 and 28, sqrt(280), 2sqrt(70), 280, 38, sqrt(38), sqrt(70)

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