document.write( "Question 128730This question is from textbook Statistics
\n" ); document.write( ": The call letters of a radio station must have 4 letters. The first letter must be a K or a W. How many different station call letters can be made if repetitions are not allowed? And if repetitions are allowed?\r
\n" ); document.write( "\n" ); document.write( "I'm not sure how to set this up, could you please help. \n" ); document.write( "
Algebra.Com's Answer #94170 by stanbon(75887)\"\" \"About 
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The call letters of a radio station must have 4 letters. The first letter must be a K or a W.
\n" ); document.write( "How many different station call letters can be made if repetitions are not allowed?
\n" ); document.write( "# of ways to pick the 1st letter: 2 ways
\n" ); document.write( "# of ways to pick the 2nd letter: 25
\n" ); document.write( "# of ways to pick the 3rd letter: 24
\n" ); document.write( "# of ways to pick the 4th letter: 23
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\n" ); document.write( "Total # of ways: 2*25*24*23 = 27600
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\n" ); document.write( "And if repetitions are allowed?
\n" ); document.write( "# of ways to pick the 1st leter: 2 ways
\n" ); document.write( "# of ways to pick each of the other letters: 26
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\n" ); document.write( "Total # of ways = 2*26^3 = 35152
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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