Sequence Test

Hard level

This level has harder exercises, the answers will have at 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) 14336, 16, 3584, 18, 896, 20, 224, 22, 56, 24, 14 26 (odd=seq1, even=seq2; seq1: /= 4, seq2: += 2)
2) 13, 35, 101, 299, 893 2675 (3 * previous - 4)
3) 2, -16, 15, -10, -64, -19, -50, -256, -23, -250, -1024, -27, -1250, -4096, -31, -6250, -16384 -35 (seq1, seq2, seq3...; even index has - before it; seq1: *= 5, seq2: *= 4, seq3: += 4)
4) 9, 11, 14, 19, 26 37 (previous + next prime number)
5) 7, 352, 63, 176, 567, 88, 5103, 44, 45927, 22, 413343 11 (odd=seq1, even=seq2; seq1: *= 9, seq2: /= 2)
6) 15, 16, 20, 29, 45 70 (previous + ^2 of place in sequence)
7) 10, 4, 3645, 6, 16, 1215, 2, 64, 405, -2, 256, 135, -6, 1024, 45, -10, 4096 15 (seq1, seq2, seq3...; seq1: -= 4, seq2: *= 4, seq3: /= 3)
8) 5, 6, 5, 40, 54, 1, 320, 486, -3, 2560, 4374, -7, 20480, 39366, -11, 163840, 354294 -15 (seq1, seq2, seq3...; seq1: *= 8, seq2: *= 9, seq3: -= 4)
9) 17, 7, 23328, 153, 13, 3888, 1377, 19, 648, 12393, 25, 108, 111537, 31, 18, 1003833, 37 3 (seq1, seq2, seq3...; seq1: *= 9, seq2: += 6, seq3: /= 6)
10) 13, 14, 18, 27, 43 68 (previous + ^2 of place in sequence)
11) 12, 44, 140, 428, 1292 3884 (3 * previous + 8)
12) 11, 11, 12, 12, 10, 6, 13, 9, 0, 14, 8, -6, 15, 7, -12, 16, 6 -18 (seq1, seq2, seq3...; seq1: += 1, seq2: -= 1, seq3: -= 6)
13) 7, 13, 20, 33, 53 86 (Next is + of previous two)
14) 7, 27, 87, 267, 807 2427 (3 * previous + 6)
15) 7, 26, 102, 406, 1622 6486 (4 * previous - 2)
16) 16, 40, 112, 328, 976 2920 (3 * previous - 8)
17) 9, 12288, 12, 18, 3072, 15, 36, 768, 18, 72, 192, 21, 144, 48, 24, 288, 12 27 (seq1, seq2, seq3...; seq1: *= 2, seq2: /= 4, seq3: += 3)
18) 13, 67228, 91, 9604, 637, 1372, 4459, 196, 31213, 28, 218491 4 (odd=seq1, even=seq2; seq1: *= 7, seq2: /= 7)
19) 1, 7, 25, 79, 241 727 (3 * previous + 4)
20) 1, -1, -9, -41, -169 -681 (4 * previous - 5)
21) 14, 15, 19, 28, 44 69 (previous + ^2 of place in sequence)
22) 98304, 17, 6, 12288, 26, 7, 1536, 35, 8, 192, 44, 9, 24, 53, 10, 3, 62 11 (seq1, seq2, seq3...; seq1: /= 8, seq2: += 9, seq3: += 1)
23) 10, 11, 15, 24, 40 65 (previous + ^2 of place in sequence)
24) 8, 18, 48, 138, 408 1218 (3 * previous - 6)
25) 11, 13, 16, 21, 28 39 (previous + next prime number)


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