5, 10, 3, 8, 1...
add 5 subract 7
{ (5) +5 (10) -7 (3) +5 (8) -7 (1) +5 (6) }... and so forth.
5
27.
5
10
5
10
456789
26 As far as I can tell the sequence is +10,-5,+10,-5.
5
The sequence 1, 3, 10, 34 can be generated by the pattern where each term is derived from the previous term using a specific polynomial relationship. To find the next number, we can observe that each number approximately multiplies by increasing factors and adds a constant. The next number in this sequence is 122, following the identified pattern.
21
it is 7