1. A computer department is assigning random computers to faculty members attaching an ID number to each of them. The ID numbers include 2 letters of the English alphabets, followed by a 5-digit number, for example “CD95368”. There are no restrictions on letters or digits. How many different ID numbers can be created using this format?

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Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.