Series

The sum of the terms in a sequence is known as a Series

• True

• False

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

• $n\left(\frac{a_1+a_n}{2}\right)$
  

• $ar^{n-1}$
  

• $\frac{a\left(1-r^n\right)}{1-r}$

• None of these

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

Evaluate the infinite series described: 

• No Sum
• 0
• -1/9
• -4/25

Evaluate the infinite series described: 

• -16
• -18
• 3
• -15

Evaluate the infinite series described: 

• 4/3
• 16384/3
• No Sum
• 5522

Evaluate the infinite series described: 

• 3/5
• 1/2
• 1/4
• No Sum

Evaluate the infinite series described: 

• No Sum
• 4096/5627
• 4/9
• 2048/2813

Evaluate the infinite series described: 

• 20/3
• No Sum
• 21/5
• 4/3

Evaluate the infinite series described: 

• No Sum
• 1
• 6
• 3