Sequence is +4 - 3 + 5 - 2 + 6 - 1 (+1 - 1)
2 6 3 8 6 12 next number 11
No, the sequence 3, 6, 12, 24 is not an arithmetic sequence. In an arithmetic sequence, the difference between consecutive terms is constant. Here, the differences are 3 (6-3), 6 (12-6), and 12 (24-12), which are not the same. This sequence is actually a geometric sequence, as each term is multiplied by 2 to get the next term.
Because 3 * 2 = 6, 6 * 2 = 12, and 12 * 2 = 24, the common ration of the sequence is 2. If we are given the fact that the sequence does have a common ratio, the answer can be found by simply taking 6/3 = 2.
11. 2 + 4 = 6 6 - 3 = 3 3 + 5 = 8 8 - 2 = 6 6 + 6 = 12 12 - 1 = 11
11
2 6 3 8 6 12 2 6 3 8 6 12
2 (+4) --> 6 6 (-3) --> 3 3 (+5) --> 8 8 (-2) --> 6 6 (+6) --> 12 The next number would have been 12 (-1) --> 11 ===============
(plus) + 4 (minus) - 3
11
9
2 6 3 8 12
The number that completes the sequence would be 11. Imagine the sequence as two sequences of every other number starting with the first 2 and the first 6. You would have 2 3 6 and 6 8 12 2 3 6 is adding odd numbers starting with one. 6 8 12 is adding even numbers starting with two. The next number belongs to 2 3 6 so you would add 5 to get 11.
1