Q1:W4:PRETEST

What is the next term of the given geometric sequence 3, 9, 27, 81….?

• 180

• 243

• 15

• 16

What is the twelfth term of the following geometric sequence 5, -15, 45…?

• -375,435

• -785,735

• -885,735

• -885,745

Find the geometric means between 3 and 12.

• 5

• 6

• 7

• 8

Determine the geometric mean of the terms 2, 3, and 6.

• 3.302

• 3.352

• 3.361

• 3.426

The geometric mean of three numbers is 8 and the other two numbers are 4 and 32. What is the third number?

• 3

• 4

• 5

• 6

There are four geometric means between 3 and 729. Find the fourth term of the geometric sequence.

• 27

• 81

• 243

• 516

What is the first term of a geometric sequence whose third term is 4 and 6th term is 1/2 ?

• 2

• 4

• 6

• 8

What is the first term of the geometric sequence whose 4th term is -3 and sixth term is  $-\frac{1}{3}$  ?

• -27

• -81

•  $-\frac{1}{27}$  

•  $-\frac{1}{81}$  

Find the sum of the first seven terms of a geometric sequence 3, 6, 12……

• 189

• 281

• 381

• 389

Find the sum of the infinite geometric sequence $\frac{3}{8}-\frac{3}{16}+\frac{3}{32}-\frac{3}{64}+...$  

•  $\frac{1}{2}$  

•  $\frac{1}{3}$  

•  $\frac{1}{4}$  

•  $\frac{1}{8}$