How Many Permutations Does a Combination Lock Have If Each

question 13

Multiple Choice

How many permutations does a combination lock have if each combination has three numbers, no two numbers of any combination are equal, and the lock has 25 numbers?

• A) 13,806
• B) 13,757
• C) 13,797
• D) 13,800

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Definitions:

R Square

A statistical measure that represents the proportion of the variance for a dependent variable that's explained by one or more independent variables in a regression model.

Independent Variables

Variables in an experiment that are manipulated or changed to observe their effect on dependent variables.

Dependent Variables

Variables in an experiment or model that are expected to change as a result of changes in the independent variables.

Standard Residuals

Residuals that have been standardized to have a mean of 0 and a standard deviation of 1, useful for identifying outliers in regression analysis.