document.write( "Question 1139008: Find the number n of distinct permutations that can be formed from all the letters of : unusual. \n" ); document.write( "

Algebra.Com's Answer #756796 by math_helper(2461) $\"\"$ $\"About$

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\n" ); document.write( "If all 7 letters were distinct, there would be 7! distinct permutations. However, we need to divide 7! by 3! for the repeated 'u's:
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\n" ); document.write( "\n" ); document.write( "7!/3! = 7*6*5*4 = 840\r
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