Express the Sum Using Summation Notation $$3 + 6 + 9 + \ldots + 21$$

question 73

Multiple Choice

Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.
- $$3 + 6 + 9 + \ldots + 21$$

• A) \(\sum _ { i = 1 } ^ { 7 } 3 i ^ { 2 }\)
• B) \(\sum _ { i = 1 } ^ { 7 } i ^ { 2 }\)
• C) \(\sum _ { i = 1 } ^ { 7 } 3 i\)
• D) \(\sum _ { i = 0 } ^ { 7 } 3 i\)

---

Definitions:

E Proposition

In traditional logic, a universal negative statement that asserts no members of a certain class belong to another class.

Nonstandard Quantifiers

Quantifiers that do not conform to the traditional logical structures, used to express quantities in an unconventional manner.

Standard Form

A recognized or conventional pattern of word order or arrangement used in formatting mathematical, logical, or philosophical expressions.

Traditional Square of Opposition

The traditional square of opposition is a diagram representing the relations between four types of categorical propositions, showcasing how they interact logically through contradiction, contrariety, and other relations.