document.write( "Question 918989: in how many ways can we choose a signal of four flags from a collection of 10 distinct flags ( where the order is important)? \n" ); document.write( "
Algebra.Com's Answer #557375 by Hawksfan(61)\"\" \"About 
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Since order is important, This is a permutation. \r
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\n" ); document.write( "\n" ); document.write( "The formula for permutation P = n!/(n-r)!\r
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\n" ); document.write( "\n" ); document.write( "In this case \r
\n" ); document.write( "\n" ); document.write( "n = 10 the total #
\n" ); document.write( "r = 4 the selected number chosen to take out of the total\r
\n" ); document.write( "\n" ); document.write( "P = 10!/(10-4)! = (10*9*8*7*6*5*4*3*2*1)/6!
\n" ); document.write( " = (10*9*8*7*6*5*4*3*2*1)/(6*5*4*3*2*1) = 10*9*8*7
\n" ); document.write( " = 5040
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