Question

In a sequence of integers,A(n)=A(n-1)-A(n-2) where A(n) is the nth term in the sequence,n is an integer and n>=3,A(1)=1,A(2)=1,calculate S(1000) where S(1000) is the sum of first 1000 words?
options are 2,3 ,4 and 0.

Answer 1

what do u mean by first 1000 words?