Sequence Test

Medium level

This level has medium hard exercises; this is harder than the basic because the answers will have at most 4 digits. If you want to select which tests are used, you can set up a custom exercise.

Scoring

You get one point for every correct answer, unlike the math test there is no negative score.

Manual

The answer to the sequenence and it's explaination will be printed right next to it in the site's background color. You can use CTRL+A, Command+A or mouse select all to show it. Custom tests will offer more control over the test.

Questions
1) 4, 8, 12, 20, 32 52 (Next is + of previous two)
2) 12, 13, 17, 26, 42 67 (previous + ^2 of place in sequence)
3) 6, 7, 4, 15, 2, 23, 0, 31, -2, 39, -4 47 (odd=seq1, even=seq2; seq1: -= 2, seq2: += 8)
4) 17, 19, 36, 55, 91 146 (Next is + of previous two)
5) 12, 11, 4, 20, -4, 29, -12, 38, -20, 47, -28 56 (odd=seq1, even=seq2; seq1: -= 8, seq2: += 9)
6) 17, 49, 145, 433, 1297 3889 (3 * previous - 2)
7) 15, 16, 20, 29, 45 70 (previous + ^2 of place in sequence)
8) 8, 15, 36, 99, 288 855 (3 * previous - 9)
9) 10, 17, 31, 59, 115 227 (2 * previous - 3)
10) 16384, 12, 4096, 4, 1024, -4, 256, -12, 64, -20, 16 -28 (odd=seq1, even=seq2; seq1: /= 4, seq2: -= 8)
11) 4, 6, 9, 14, 21 32 (previous + next prime number)
12) 1, 8, 43, 218, 1093 5468 (5 * previous + 3)
13) 14, 16, 19, 24, 31 42 (previous + next prime number)
14) 7, 8, 12, 21, 37 62 (previous + ^2 of place in sequence)
15) 4, 6, 9, 14, 21 32 (previous + next prime number)
16) 1, 3, 6, 11, 18 29 (previous + next prime number)
17) 10, 12, 15, 20, 27 38 (previous + next prime number)
18) 1, 3, 6, 11, 18 29 (previous + next prime number)
19) 9, 15, 24, 39, 63 102 (Next is + of previous two)
20) 12, 14, -2, 16, -18 34 (Next is - of previous two)
21) 12, 13, 17, 26, 42 67 (previous + ^2 of place in sequence)
22) 1, 4, 25, 172, 1201 8404 (7 * previous - 3)
23) 13, 6, 11, 15, 9, 24, 7, 33, 5, 42, 3 51 (odd=seq1, even=seq2; seq1: -= 2, seq2: += 9)
24) 8, 9, 13, 22, 38 63 (previous + ^2 of place in sequence)
25) 10, 33, 125, 493, 1965 7853 (4 * previous - 7)


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