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a common computer programming rule is that names of variables must be between one and eight...

a common computer programming rule is that names of variables must be between one and eight characters long. the first character can be any of the 26 letters, while successive characters can be any of the 26 letters or any of the 10 digits. for example, allowable variable names include A, Bb, and M3477K. how many different variable names are possible? (ignore the difference between uppercase and lower case letters)
Math   Statistics-And-Probability   
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