The __________ Number I Is Defined As $i = \sqrt { - 1 }$

question 206

Multiple Choice

The __________ number i is defined as $i = \sqrt { - 1 }$ .

• A) real
• B) rational
• C) integer
• D) imaginary
• E) complex

---

Definitions:

Barter Economy

An economic system where goods and services are exchanged directly for other goods and services without the use of money.

Currency

A system of money in general use in a particular country or economic context, serving as a medium of exchange for goods and services.

Interest

The cost of borrowing money or the payment received for lending money, typically expressed as a percentage of the principal amount per year.

Human Capital

The collective skills, knowledge, abilities, and experience of an individual or workforce, representing a form of wealth that can be directed towards economic activities.