Question

Which expression gives the number in the nth position in the sequence?
A) n
B) n - 1
C) n + 2
D) 2n - 2

Answer 1

D because it is 2(n-1). The formula for arithmetic progressions is the first term +(n-1)d. The common difference is 2, and the first term is zero, so it is 2(n-1) or 2n-2

Answer 2

Hope that helped