The first term of an AP is and the common difference is

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

Problem

The first term of an AP is

6

and the common difference is

3

. If the sum of terms from the 5th term to the

q

th term (inclusive) is

228

, then

q

equals (a)

13

(b)

12

(c)

11

(d)

15