The pattern in the sequence 11 12 14 17 21 is an increasing sequence where each number is the sum of the previous number and a specific value. In this case, the specific value is increasing by 1 with each subsequent number. So, starting from 11, we add 1 to get 12, then add 2 to get 14, add 3 to get 17, and add 4 to get 21.
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11, -10, 9
It is 30; the first, third, and fifth numbers form the sequence 12, 18, 24. The second, fourth, and sixth numbers follow the sequence 11, 14, 17. Logically, the seventh number must be 24 + 6, so 30.
The next figure would be 21, followed by 11 & 10.
The series alternates between two sequences: one that increases by 1 (11, 12, 13, 14) and another that increases by 1 as well but starts from 2 (2, 3, 4). Following this pattern, the next number in the increasing sequence would be 15, and the next number in the second sequence would be 5. Therefore, the next numbers in the series would be 15 and 5.
There is no problem with that sequence.