document.write( "Question 356973: 1. How many strings of 5 lower case English letters
\n" );
document.write( "are there that have the letter x in them somewhere? Here strings
\n" );
document.write( "may use the same letter more than once. (Hint: It might be easier
\n" );
document.write( "to first count the strings that don’t have an x in them.)
\n" );
document.write( "2. If 5 -letter “words” are formed using the letters A,
\n" );
document.write( "B, C, D, E, F, G, how many such words are possible for each of
\n" );
document.write( "the following conditions:
\n" );
document.write( "(a) No condition is imposed.
\n" );
document.write( "Your answer is :
\n" );
document.write( "(b) No letter can be repeated in a word.
\n" );
document.write( "Your answer is :
\n" );
document.write( "(c) Each word must begin with the letter A and letters can be
\n" );
document.write( "repeated.
\n" );
document.write( "Your answer is :
\n" );
document.write( "(d) The letter C must be at the end and letters can be repeated.
\n" );
document.write( "Your answer is :
\n" );
document.write( "(e) The second letter must be a vowel and letters can be repeated. \n" );
document.write( "
Algebra.Com's Answer #254923 by edjones(8007)![]() ![]() You can put this solution on YOUR website! 1. 26^5-25^5=2,115,751 \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |