Sequence Test

Hard level + non math sequences

This has more possible exercises than the hard level. The answers can 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) 8, -14, 11, -14, -21, -10, -20, -28, -9, -26, -35, -8, -32, -42, -7, -38, -49 -6 (seq1, seq2, seq3...; even index has - before it; seq1: += 6, seq2: += 7, seq3: -= 1)
2) 13, 47, 149, 455, 1373 4127 (3 * previous + 8)
3) 17, 1117, 3117, 132117, 31131217 23411217 (Every following number describes the previous one; 111221 - One 1, One 2, Two 1s )
4) 491520, 25000, 61440, 5000, 7680, 1000, 960, 200, 120, 40, 15 8 (odd=seq1, even=seq2; seq1: /= 8, seq2: /= 5)
5) 17, 54, 165, 498, 1497 4494 (3 * previous + 3)
6) 7, 5, 4, 4, 4 4 (Every term shows the number of letters in the English transcription of its number; 1, 3 (=one))
7) 14, 16, 19, 24, 31 42 (previous + next prime number)
8) 17, 19, 22, 27, 34 45 (previous + next prime number)
9) 17, 2916, 17, 12, 972, 18, 7, 324, 19, 2, 108, 20, -3, 36, 21, -8, 12 22 (seq1, seq2, seq3...; seq1: -= 5, seq2: /= 3, seq3: += 1)
10) 16, 37, 79, 163, 331 667 (2 * previous + 5)
11) 1, 10, 28, 64, 136 280 (2 * previous + 8)
12) 2, 7, -5, 12, -17 29 (Next is - of previous two)
13) 16, 295245, 1, 144, 32805, 3, 1296, 3645, 9, 11664, 405, 27, 104976, 45, 81, 944784, 5 243 (seq1, seq2, seq3...; seq1: *= 9, seq2: /= 9, seq3: *= 3)
14) 11, 16, -5, 21, -26 47 (Next is - of previous two)
15) 14, 16, 19, 24, 31 42 (previous + next prime number)
16) 7, 8, 12, 21, 37 62 (previous + ^2 of place in sequence)
17) 4, 5, 9, 18, 34 59 (previous + ^2 of place in sequence)
18) 11, 42, 135, 414, 1251 3762 (3 * previous + 9)
19) 16, 34, 70, 142, 286 574 (2 * previous + 2)
20) 3402, 151263, 16, 1134, 21609, 21, 378, 3087, 26, 126, 441, 31, 42, 63, 36, 14, 9 41 (seq1, seq2, seq3...; seq1: /= 3, seq2: /= 7, seq3: += 5)
21) 11, 28, 79, 232, 691 2068 (3 * previous - 5)
22) 3, 116640, 24, 19440, 192, 3240, 1536, 540, 12288, 90, 98304 15 (odd=seq1, even=seq2; seq1: *= 8, seq2: /= 6)
23) 1, 7, 19, 43, 91 187 (2 * previous + 5)
24) 7, 360448, 14, 10, 45056, 20, 13, 5632, 26, 16, 704, 32, 19, 88, 38, 22, 11 44 (seq1, seq2, seq3...; seq1: += 3, seq2: /= 8, seq3: += 6)
25) 4, 12, 28, 60, 124 252 (2 * previous + 4)


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