Question

What is the 507th term of the sequence 1, -1, 2, -2, 1, -1, 2, -2, 1,...........?​

Answer 1

on the basis of above series

clearly Repetition takes place for each set of the fourth term.

hence 507th term will be 2507 when divided by 4,gives 3 as remainder and 3rd term is 2.

thus, 2is the correct answer