Geometric Series Sigma

Which of the following represents the SUM of a geometric series with 8 TOTAL terms and whose FIRST TERM is 3 and whose COMMON RATIO is 4?

• 32,756

• 42,560

• 28,765

• 65,535

Evaluate (that is, find the sum) the geometric series below:

4, - 8 , 16 - 32..., n = 7

• 195

• 518

• 516

• 145

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

• 59,050

• -59,048

• -78,732

• 118,096

Evaluate the geometric series below:
a₁ = -2, a_n = -1458, r = 3

• -2186

• -2408

• 1

• -2703

Determine the sum of the series written in Sigma Notation. 

• -1

• 255

• 295

• 350

• 295245

• 29524

• 2952450

• 29525

• 295245

• 29524

• 2952450

• 29525

Find the sum of the infinite geometric series, if it exists.

• 8

• 8/5

• 10

• Does not exist

• -585

• 585

• -21,845

• 21,845

Answer explanation