document.write( "Question 213140This question is from textbook
\n" ); document.write( ": Write an expression for the number of ten-digit numerical codes that can be formed if:
\n" ); document.write( "a)the digits must all be different
\n" ); document.write( "b)the digits may repeat \n" ); document.write( "

Algebra.Com's Answer #161027 by checkley77(12844) $\"\"$ $\"About$

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10!=3,638,800 ans.
\n" ); document.write( "10^10=1*10^10 ans. \n" ); document.write( "

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