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#6
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![]() R4 1,3,3,7
R5 1,3,5 R6 2 R7 1,6,8,9 R8 2,4,6,7 R9 7,8,10,12 = $1556. 2,3/1/2,3/6/2,6/4,6,7,8,10,11 =$96 1,2,3,5,7/1,5/2,3/1,6,9/1,2/7 =$240 |