Express the Sum Using Summation Notation $$\frac { 1 } { 4 } + \frac { 2 } { 5 } + \frac { 1 } { 2 } + \cdots + \frac { 4 } { 5 }$$

question 70

Multiple Choice

Express the sum using summation notation.
- $$\frac { 1 } { 4 } + \frac { 2 } { 5 } + \frac { 1 } { 2 } + \cdots + \frac { 4 } { 5 }$$

• A)
• \(\sum _ { k = 1 } ^ { n } \frac { k } { k + 3 }\)
• B)
• \(\sum _ { k = 1 } ^ { 12 } \frac { k } { k + 3 }\)
• C)
• \(\sum _ { k = 0 } ^ { 12 } \frac { k } { k + 3 }\)
• D)
• \(\sum _ { k = 3 } ^ { 12 } \frac { k } { k + 1 }\)

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Definitions:

Witness

A person who sees an event, typically a crime or accident, take place and can provide a firsthand account of what happened.

Memory

The cognitive process involving the encoding, storage, and retrieval of information over time.

Serial Position Effect

A psychological phenomenon where people tend to recall the first and last items in a list better than the middle items.

Presentation

The act of showing, displaying, or delivering information or data to an audience through various means such as speeches, demonstrations, or multimedia.