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) 8, 10, 13, 18, 25 36 (previous + next prime number)
2) 16, 22, -6, 28, -34 62 (Next is - of previous two)
3) 4, 6, 9, 14, 21 32 (previous + next prime number)
4) 2, 9, 37, 149, 597 2389 (4 * previous + 1)
5) 10, 12, 15, 20, 27 38 (previous + next prime number)
6) 15, 17, 13, 13, 11, 9, 9, 5, 7, 1, 5 -3 (odd=seq1, even=seq2; seq1: -= 2, seq2: -= 4)
7) 1, 0, -5, -30, -155 -780 (5 * previous - 5)
8) 14, 21, -7, 28, -35 63 (Next is - of previous two)
9) 2, 15, 16, 6, 128, -3, 1024, -12, 8192, -21, 65536 -30 (odd=seq1, even=seq2; seq1: *= 8, seq2: -= 9)
10) 7, 12, -5, 17, -22 39 (Next is - of previous two)
11) 7, 9, 12, 17, 24 35 (previous + next prime number)
12) 14, 15, 19, 28, 44 69 (previous + ^2 of place in sequence)
13) 17, 18, 22, 31, 47 72 (previous + ^2 of place in sequence)
14) 4, 12, 28, 60, 124 252 (2 * previous + 4)
15) 13, 48, 153, 468, 1413 4248 (3 * previous + 9)
16) 13, 13, 15, 39, 17, 117, 19, 351, 21, 1053, 23 3159 (odd=seq1, even=seq2; seq1: += 2, seq2: *= 3)
17) 2, 3, 7, 16, 32 57 (previous + ^2 of place in sequence)
18) 13, 35, 79, 167, 343 695 (2 * previous + 9)
19) 416, 3, 208, 12, 104, 48, 52, 192, 26, 768, 13 3072 (odd=seq1, even=seq2; seq1: /= 2, seq2: *= 4)
20) 3, 4, 8, 17, 33 58 (previous + ^2 of place in sequence)
21) 8, 10, 13, 18, 25 36 (previous + next prime number)
22) 15, 6, 24, 10, 33, 14, 42, 18, 51, 22, 60 26 (odd=seq1, even=seq2; seq1: += 9, seq2: += 4)
23) 2, 8, -6, 14, -20 34 (Next is - of previous two)
24) 1, 6, 26, 106, 426 1706 (4 * previous + 2)
25) 14, 16, 19, 24, 31 42 (previous + next prime number)


Quick links:

Practice: Easy | Medium | Hard | Hard + non math
Customized