A geometric progression has first term and common ratio

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

Problem

A geometric progression has first term

2

and common ratio

3

. What is the value of

\dfrac{a_3\,a_7}{a_5^{\;2}}

? (a)

9

(b)

3

(c)

1

(d)

27