The n^thelement of a series is represented as
X_n= (-1)ⁿX_n-1
If X₀= x and x > 0 then the following is always true

Consider the sequence of numbers a₁, a₃, a₃, ..... to infinity where a₁= 81.33 and a₂= -19 and a_j= a_j-1-a_j-2for j ≥ 3.What is the sum of the first 6002 terms of this sequence?

Choose the pair of numbers which comes next 75 65 85 55 45 85 35