One possible answer is -94.
This is using the rule
Un = (-39n5 + 675n4 - 4355n3 + 12975n2 - 17296n + 8220)/60 for n = 1, 2, 3, ...
The pattern alternates between two sequences: one decreasing by 1 (18, 13) and the other decreasing by 2 (4, 6). Following this pattern, the next number after 6 should be 3 (6 - 3), and the next number after 13 should be 12 (13 - 1). Thus, the next two numbers in the sequence are 12 and 3.
It is 43 because 31+12 = 43
If you mean: 1 1 2 3 5 8 13 21 then the next number is 13+21 = 34
The pattern is plus 7. So the next number used to be 1.
1 2 3 4 .12 & .13 & .15 & .18 & .22
The pattern alternates between two sequences: one decreasing by 1 (18, 13) and the other decreasing by 2 (4, 6). Following this pattern, the next number after 6 should be 3 (6 - 3), and the next number after 13 should be 12 (13 - 1). Thus, the next two numbers in the sequence are 12 and 3.
eight
What would be the next number in this series 15 12 13 10 11 8?
The next number could be 25. +3, +6, +9, +12 etc.
It is 43 because 31+12 = 43
If you mean: 1 2 3 5 8 13 then the next number is 8+13 = 21
If you mean: 1 1 2 3 5 8 13 21 then the next number is 13+21 = 34
The pattern is plus 7. So the next number used to be 1.
21 and 13. The pattern is t(n) = (-n4 + 10n3 - 23n2 + 38n - 12)/12
prime numbers - next number is 13
The pattern appears to be: subtract 6, add 17, subtract 14, add 9, subtract 7. Following this pattern, the next number should be obtained by adding 3 to the last number in the sequence, which is 6. Therefore, the next number in the sequence is 9.
37