document.write( "Question 1132037: How many two-letter codes can be formed using the letters A, B, C, and D? Repeated letters are allowed. \n" ); document.write( "
Algebra.Com's Answer #748860 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! With repeated, there are 4 ways to choose the first and 4 ways to choose the second. That means 16 possibilities. \n" ); document.write( " |