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OpenStudy (anonymous):
A secret code must consist of three capital letters followed by a digit. Letters cannot be repeated. How many secret codes are possible? A. 358,800 B. 175,760 C. 156,000 D. 140,400
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ganeshie8 (ganeshie8):
Since there are 26 alphabets in total, first letter can be picked in 26 ways : |dw:1397737362966:dw|
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