document.write( "Question 864873: If each of the 10 digits is chosen at random, how many ways can you choose
\n" ); document.write( "the following numbers?
\n" ); document.write( "(a) A two-digit code number, repeated digits permitted.
\n" ); document.write( "(b) A three-digit identification card number, for which the first digit cannot
\n" ); document.write( "be a 0.
\n" ); document.write( "(c) A four-digit bicycle lock number, where no digit can be used twice.
\n" ); document.write( "(d) A five-digit zip code number, with the first digit not zero \n" ); document.write( "
Algebra.Com's Answer #521337 by stanbon(75887)\"\" \"About 
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If each of the 10 digits is chosen at random, how many ways can you choose
\n" ); document.write( "the following numbers?
\n" ); document.write( "(a) A two-digit code number, repeated digits permitted.:: 10^2 = 100
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\n" ); document.write( "(b) A three-digit identification card number, for which the first digit cannot
\n" ); document.write( "be a 0.:: 9*10^2 = 900
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\n" ); document.write( "(c) A four-digit bicycle lock number, where no digit can be used twice.
\n" ); document.write( ":: 10*9*8*7 = 5040
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\n" ); document.write( "(d) A five-digit zip code number, with the first digit not zero
\n" ); document.write( ":: 9*10^4 = 90,000
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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