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, 19, -8, 27, -35 62 (Next is - of previous two)
2) 8, 25, 59, 127, 263 535 (2 * previous + 9)
3) 15, 24, 39, 63, 102 165 (Next is + of previous two)
4) 3, 17, 14, 10, 14, 9, 17, 11, 4, 24, 8, -1, 31, 5, -6, 38, 2 -11 (seq1, seq2, seq3...; seq1: += 7, seq2: -= 3, seq3: -= 5)
5) 4, 6, 9, 14, 21 32 (previous + next prime number)
6) 9, 1, 132192, 2, 4, 22032, -5, 16, 3672, -12, 64, 612, -19, 256, 102, -26, 1024 17 (seq1, seq2, seq3...; seq1: -= 7, seq2: *= 4, seq3: /= 6)
7) 4, 21, 89, 361, 1449 5801 (4 * previous + 5)
8) 13, -13, 11, -21, -21, -12, -29, -29, -13, -37, -37, -14, -45, -45, -15, -53, -53 -16 (seq1, seq2, seq3...; even index has - before it; seq1: += 8, seq2: += 8, seq3: += 1)
9) 10, 12, 15, 20, 27 38 (previous + next prime number)
10) 13, -10, 16, -16, -50, -18, -19, -250, -20, -22, -1250, -22, -25, -6250, -24, -28, -31250 -26 (seq1, seq2, seq3...; even index has - before it; seq1: += 3, seq2: *= 5, seq3: += 2)
11) 4, 201684, -1, 28812, -6, 4116, -11, 588, -16, 84, -21 12 (odd=seq1, even=seq2; seq1: -= 5, seq2: /= 7)
12) 8, -320, 13, -10, -160, -20, -12, -80, -27, -14, -40, -34, -16, -20, -41, -18, -10 -48 (seq1, seq2, seq3...; even index has - before it; seq1: += 2, seq2: /= 2, seq3: += 7)
13) 13, 41, 125, 377, 1133 3401 (3 * previous + 2)
14) 12, 196608, 96, 24576, 768, 3072, 6144, 384, 49152, 48, 393216 6 (odd=seq1, even=seq2; seq1: *= 8, seq2: /= 8)
15) 3, 6, -5, -2, -13, -10, -21, -18, -29, -26, -37 -34 (odd=seq1, even=seq2; seq1: -= 8, seq2: -= 8)
16) 1, 524288, 8, 65536, 64, 8192, 512, 1024, 4096, 128, 32768 16 (odd=seq1, even=seq2; seq1: *= 8, seq2: /= 8)
17) 1, 3, -5, 1, -11, -1, -17, -3, -23, -5, -29 -7 (odd=seq1, even=seq2; seq1: -= 6, seq2: -= 2)
18) 9, 32, 6, 12, 16, 14, 15, 8, 22, 18, 4, 30, 21, 2, 38, 24, 1 46 (seq1, seq2, seq3...; seq1: += 3, seq2: /= 2, seq3: += 8)
19) 160, 2, 80, -5, 40, -12, 20, -19, 10, -26, 5 -33 (odd=seq1, even=seq2; seq1: /= 2, seq2: -= 7)
20) 7, 11, 9, 22, 11, 44, 13, 88, 15, 176, 17 352 (odd=seq1, even=seq2; seq1: += 2, seq2: *= 2)
21) 10, 12, 22, 34, 56 90 (Next is + of previous two)
22) 10, 12, 15, 20, 27 38 (previous + next prime number)
23) 2, 4, 7, 12, 19 30 (previous + next prime number)
24) 6, 17, 61, 237, 941 3757 (4 * previous - 7)
25) 491520, -3, 37500, -61440, -5, -7500, -7680, -7, -1500, -960, -9, -300, -120, -11, -60, -15, -13 -12 (seq1, seq2, seq3...; even index has - before it; seq1: /= 8, seq2: += 2, seq3: /= 5)


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