Sequence and Series Review

List the first five terms of the geometric sequence. Assume that the sequence begins at n = 1.

• 1 , 3 , 6 , 9 , 12

• 3 , 9 , 27 , 81 , 243

• 0 , 1 , 3 , 9 , 27

• 1 , 3 , 9 , 27 , 81

Find the common ratio: 16, 8, 4, 2, ...

• r = 2

• r = 8

• r = 1/4

• r = 1/2

What is the sum of the first ten terms of the sequence 4, -12, 36, -144 . . . ?

• 59,050

• -59,048

• -78,732

• 118,096

Find S₁₄ for the arithmetic sequence.

• 959

• 36

• 497

• 185

The next term of the sequence 2,4,8,16 is

• 64

• 32

• 108

• 20

Is the given sequence geometric?

• Yes

• No

• Cannot be determined

Find the 10th term of the following geometric sequence

5, 20, 80, 320, ...

• 81,920

• 327,680

• 1,310,720

• 5,242,880

• common difference

• wanted term

• common ratio

• first term

Given the formula for a geometric sequence , r stands for

• common difference

• wanted term

• common ratio

• first term

Find the 7th term in the sequence when the first term is 2, and the common ratio is 4

• 8192

• 32768

• 2048

• 512