The Numbers 0 Through 9 Are to Be Used in Code

question 17

Multiple Choice

The numbers 0 through 9 are to be used in code groups of four to identify an item of clothing. Code 1083 might identify a blue blouse, size medium. The code group 2031 might identify a pair of pants, size 18, and so on. Repetitions of numbers are not permitted, i.e., the same number cannot be used more than once in a total sequence. As examples, 2256, 2562 or 5559 would not be permitted. How many different code groups can be designed?

• A) 5,040
• B) 620
• C) 10,200
• D) 120

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Definitions:

Ceteris Paribus Assumption

The assumption used in economics that all other variables are held constant when analyzing the effect of one variable on another.

Behavioral Assumption

An assumption that describes the expected behavior of economic decision makers, what motivates them.

Ceteris Paribus Assumption

A Latin phrase meaning "all other things being equal", used in economics to isolate the effect of one variable change by holding other relevant factors constant.

Other-Things-Constant Assumption

An assumption in economics that all other variables remain unchanged or constant except those under immediate consideration.