In the arithmetic progression

MATHEMATICS · Single correct · A Level · Mathematics · Sequences and series · Sequences and series

Problem

-3, 1, 5, \ldots

, which term of the progression equals

85

? (a)

22^{\text{nd}}

term (b)

23^{\text{rd}}

term (c)

21^{\text{st}}

term (d)

24^{\text{th}}

term