document.write( "Question 477733: Abby is registering at a Web site. She must select a password
\n" ); document.write( "containing six numerals to be able to use the site. How many passwords are
\n" ); document.write( "allowed if no digit may be used more than once?
\n" ); document.write( " I get differennt answer from different people , Please! help me select correct answer, thank you in advance
\n" ); document.write( "a) 6!= 720
\n" ); document.write( "b) (10)!?( 10-6)!= 151.200
\n" ); document.write( "c) 10*9*8*7*6*5 = 151.200
\n" ); document.write( "d) 10+9+8+7+6+5=45
\n" ); document.write( "e) 10C6=10x9x8x7x6x5x4!/6x5x4x3x2x4!
\n" ); document.write( "=3x2x7x5=210
\n" ); document.write( "which one correct answer ? \n" ); document.write( "

Algebra.Com's Answer #327418 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "password containing six numerals to be able to use the site: 
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document.write( "no digit may be used more than once. How many passwords are allowed 
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document.write( " 10*9*8*7*6*5 = 151,200\r
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document.write( "Note: 10P6 is the same as the above(using permutation as order is important)
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document.write( "      10P6 = 10!/(10-6)! = 10!/4! = 10*9*8*7*6*5 \n" );
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