SEQUENCES AND SERIES
Find the first term of the sequence ?, 40, -160, 640
-10
Find the 12th term in a sequence with common difference -8 and first term 58.
-30
Find the 6th term: 28, 15, 2, -11
-37
Find the 23rd term: 25, 21, 17, 13
-63
Find the common difference in the sequence: 10, 3, -4, -11, ...
-7
Find the 12th term: 6,18, 54, 162
1,062,882
Find the common ratio for the sequence 500, 100, 20, 4
1/5
Find the first term of the sequence: ?, 40, 160, 640.
10
Find the missing term: 3, ___, 75, 375
15
Find the first term of the sequence ?, 32, 64, 128
16
Find the first term in a sequence where the common difference is 6 and the eleventh term is 77.
17
Find the fourth term of the sequence: -7, 21, -63
189
Find the next term in the sequence 3, 6, 12, ...
24
12th term: -9, -5, -1, 3
25
20th term: a₁ = 3, d = 15
288
Find the 72nd term in the sequence: -5, -1, 3, 7, ..
297
A Geometric sequence has a first term of 4 and a common ratio of 2. Find the 4th term.
32
15th term: 5, 7, 9, 11
33
Find the common ratio for the sequence 5, 30, 180, 1080
6
A Geometric sequence has a first term of 16 and a common ratio of 1/2. Find the 2nd term.
8
Find the common difference: 16, 25, 34, ..
9
Find the common ratio for the sequence 2, 18, 162, 1458
9
Find the 21st term in the sequence. -4, 1, 6, 11, 16, ...
96
27, 24, 21, 18
Arithmetic, -3
5, 1, -3, -7, -11
Arithmetic, -4
100, 93, 86, 79, 72
Arithmetic, -7
1, 3/2, 2, 5/2, 3, 7/2, 4
Arithmetic, 1/2
8, 13, 18, 23, 28
Arithmetic, 5
60, 18, 5.3, 1.62
Geometric, 0.3
96, 48, 24, 12, 6
Geometric, 1/2
30, 26, 22, 18, ...
arithmetic, d = -4
-29, -34, -39, -44, ...
arithmetic, d = -5
-4, -1, 2, 5, ....
arithmetic, d = 3
6, 11, 16, 21, 26, ...
arithmetic, d = 5
-34, -26, -18, -10, ...
arithmetic, d = 8
40, 43, 46, 49, ....
arithmetic, d =3
-18, 9, -4.5, 2.25, ....
geometric, r = -1/2
8, -32, 128, -512, ....
geometric, r = -4
48, 24, 12, 6, 3, ....
geometric, r = 1/2
12, 3, 3/4, 3/16, ....
geometric, r = 1/4
500, 100, 20, 4, ....
geometric, r = 1/5
7, 21, 63, 189, ....
geometric, r = 3
