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) 11, 5, 4, 2, -3, -1, -10, -4, -17, -7, -24 -10 (odd=seq1, even=seq2; seq1: -= 7, seq2: -= 3)
2) 6, 13, 19, 32, 51 83 (Next is + of previous two)
3) 3, 5, 6, -1, 12, -7, 24, -13, 48, -19, 96 -25 (odd=seq1, even=seq2; seq1: *= 2, seq2: -= 6)
4) 2, 6, -4, 10, -14 24 (Next is - of previous two)
5) 6, 14, 5, 21, 4, 28, 3, 35, 2, 42, 1 49 (odd=seq1, even=seq2; seq1: -= 1, seq2: += 7)
6) 2187, 15552, 9, 729, 2592, 7, 243, 432, 5, 81, 72, 3, 27, 12, 1, 9, 2 -1 (seq1, seq2, seq3...; seq1: /= 3, seq2: /= 6, seq3: -= 2)
7) 10, 19, 37, 73, 145 289 (2 * previous - 1)
8) 4, 5, 9, 18, 34 59 (previous + ^2 of place in sequence)
9) 7, 9, 12, 17, 24 35 (previous + next prime number)
10) 13, -12, 46875, -52, -19, -9375, -208, -26, -1875, -832, -33, -375, -3328, -40, -75, -13312, -47 -15 (seq1, seq2, seq3...; even index has - before it; seq1: *= 4, seq2: += 7, seq3: /= 5)
11) 15, 18, 33, 51, 84 135 (Next is + of previous two)
12) 7, -23328, 6, -13, -3888, -12, -19, -648, -24, -25, -108, -48, -31, -18, -96, -37, -3 -192 (seq1, seq2, seq3...; even index has - before it; seq1: += 6, seq2: /= 6, seq3: *= 2)
13) 3, 5, 8, 13, 20 31 (previous + next prime number)
14) 4, 4, 4, 4, 4 4 (2 * previous - 4)
15) 3, -3072, 14, -15, -768, -18, -75, -192, -22, -375, -48, -26, -1875, -12, -30, -9375, -3 -34 (seq1, seq2, seq3...; even index has - before it; seq1: *= 5, seq2: /= 4, seq3: += 4)
16) 1, 2, 7, 32, 157 782 (5 * previous - 3)
17) 8, 15, 29, 57, 113 225 (2 * previous - 1)
18) 1, 10, -9, 19, -28 47 (Next is - of previous two)
19) 7168, 6, 1944, 1792, 10, 648, 448, 14, 216, 112, 18, 72, 28, 22, 24, 7, 26 8 (seq1, seq2, seq3...; seq1: /= 4, seq2: += 4, seq3: /= 3)
20) 12, 30, 84, 246, 732 2190 (3 * previous - 6)
21) 7, 16, 43, 124, 367 1096 (3 * previous - 5)
22) 1, 4, 4, 16, 64 1024 (Next is * of previous two)
23) 1, 9, 10, 19, 29 48 (Next is + of previous two)
24) 6, 8, -2, 10, -12 22 (Next is - of previous two)
25) 1, 5, -4, 9, -13 22 (Next is - of previous two)


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