document.write( "Question 1013816: There are 4 rows of button like 1 2. 3
\n" ); document.write( " 4. 5. 6
\n" ); document.write( " 7. 8. 9
\n" ); document.write( " 0
\n" ); document.write( "How many 4 digit bank numbers possible?
\n" ); document.write( "

Algebra.Com's Answer #630134 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
How many 4 digit bank numbers possible?
\n" ); document.write( "-------------
\n" ); document.write( "10^4 = 10000
\n" ); document.write( "-----
\n" ); document.write( "How the rows are arranged is not relevant.
\n" ); document.write( "
\n" ); document.write( "
\n" );