Sum of a Finite Geometric Series

The n^th term of a geometric sequence is given by ...

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The sum of an infinite Geometric series is given by:

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The sum of an finite Geometric series is given by:

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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 the sum of the geometric series.

2 + 12 + 72 + 432

• 432

• 518

• 211

• 438

What is the sum of the first 10 terms for the following geometric series:
2-6+18-54+...

• 59048
• -29524
• 524288
• 3069

What is the sum of the first 10 terms for the following geometric series:
1+1/2+1/4+1/8+1/16+...

• 0.999
• 0.002
• 9.8
• 1.998

Determine the sum of the finite geometric sequence.

• 13,120

• 13,021

• 12,031

• 11,320

Which is closest to the sum of the first 11 terms of a sequence that begins with 1/2 that has a common ratio of 2.5?

• 15000

• 8000

• 5000

• 300