document.write( "Question 942850: what is the formula for permutation in algebra 1 \n" ); document.write( "
Algebra.Com's Answer #574802 by Theo(13342)\"\" \"About 
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the permutation of n things taken x at a time is equal to n! / (n-x)!\r
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\n" ); document.write( "\n" ); document.write( "if n = 3 and x = 2, then the permutation of 3 things taken 2 at a time is equal to 3! / 1! which is equal to 3! which is equal to 3*2 = 6.\r
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\n" ); document.write( "\n" ); document.write( "if n = 3 and x = 1, then the permutation of 3 things taken 1 at a time is equal to 3! / 2! which is equal to 3.\r
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\n" ); document.write( "\n" ); document.write( "the permutation of n things taken n at a time is always n!.\r
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\n" ); document.write( "\n" ); document.write( "if n = 3 and x = 3, then the permutation of 3 things taken 3 at a time is equal to 3! / 0! which is equal to 3!.\r
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\n" ); document.write( "\n" ); document.write( "0! is always equal to 1.\r
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