document.write( "Question 146144: how would i do this? Indicate the formula for the following conditions.\r
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Algebra.Com's Answer #106698 by solver91311(24713)\"\" \"About 
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\"P%5Bn%2Cr%5D=n%21%2F%28n-r%29%21\" where \"n%21=n%2A%28n-1%29%2A%28n-2%29\"...\"3%2A2%2A1\"\r
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\n" ); document.write( "\n" ); document.write( "Example: Permutations of 6 things taken 4 at a time. \"P%5B6%2C4%5D=6%21%2F%286-4%29%21=%286%2A5%2A4%2A3%2A2%2A1%29%2F%282%2A1%29=720%2F2=360\"\r
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