Question

What is the 9the term of the sequence?

3,-12,48,-192

A. 196,608
B. 786,432
C. -196,608
D. -786,432

Answer 1

A. 196,608

It's not hard.

Answer 2

A. 196,608

Explanation:

-12/3 = -4

48 / -12 = -4 and -192 / 48 = -4

This is a geometric sequence with common ratio -4.

an = a1 r^(n -1) so:-

9th term (a9) = 3*(-4)^(9-1)

= 196,608