A computer password is made up of five characters. Each character can be a capital letter (A through Z) or a digit (0 through 9).How many passwords have three letters and two digits?
A. 263 × 102
B. 10 × 263 × 102
C. 26 × 25 × 24 × 10 × 9
D. 3 × 263 × 102
E. none of these
Answer: B
Mathematics
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A. 
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C. - 3
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yd long by 
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A. 
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