document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1194847>Question 1194847</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many different radio stations can be named with 4 different letters of the alphabet in which \"D\" must come first? (Repetition is not allowed) </SPAN>\n" );
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document.write( "We have 3 slots to fill. The first slot is locked in as \"D\".\r<BR>\n" );
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document.write( "There are 26-1 = 25 letters to pick from for the second slot.<BR>\n" );
document.write( "Then 25-1 = 24 letters for the third slot.<BR>\n" );
document.write( "Finally there are 24-1 = 23 letters for the fourth final slot. <BR>\n" );
document.write( "This countdown is directly due to repeated letters not being allowed.\r<BR>\n" );
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document.write( "1*25*24*23 = <font color=red>13,800</font> different radio station names are possible.<BR>\n" );
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