document.write( "Question 993972: How many different 7-letter words can be made\r
\n" ); document.write( "\n" ); document.write( "A. if the first letter must be A, X or T and no letter may be repeated?\r
\n" ); document.write( "\n" ); document.write( "B. if repeats are allowed (but the first letter is A, X or T)?\r
\n" ); document.write( "\n" ); document.write( "C. How many of the 7-letter words (starting with A, X or T) with no repeats end in S?
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Algebra.Com's Answer #613158 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "A. 3 ways to choose the first letter, then 25 ways to choose the second letter, then 24 ways to choose the third letter, and so on. So:\r
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\n" ); document.write( "\n" ); document.write( "Of course, you have to use the mathematician's definition of a seven-letter word which is just a group of seven letters that do not necessarily have meaning as a word in any particular language. You must also assume though the problem did not specify, that the available letters come from the standard 26 character English alphabet.\r
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\n" ); document.write( "My calculator said it, I believe it, that settles it\r
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