Arithmetic and Geometric Series

Find the sum of the first 718 terms for the series 2 + 4 + 6 + ... + 1436

• 1,797

• 116,236

• 321,704

• 516,242

Find the indicated sum for the geometric series.

• _S6 = 21,845

• _S6 = 72,000

What is the formula for the sum of the first n terms of a geometric sequence?

• None of these

Which letter in the formula for the sum of the first n terms of a geometric series denotes the first term of the geometric series?

• a

• n

• r

• none of these

Is the following a geometric series 1, 2, 4, 8,16,,,?

• Yes

• No

Find the sum of the first 4 terms of the geometric series 1 + 0.5 + 0.25 + ?

• 1.875

• 0.125

• 1.75

• None of these

Is the sum of the first n terms of a geometric series always positive?

• Yes

• no

• 149
• 11,200
• 5,600
• 140

To find the next term in an arithmetic sequence…

• add the common difference d

• multiply by the common ratio r

#1 Hello World

• 196

• 392

• 49

• 254