document.write( "Question 140430: In how many ways can three numbers be selected from the set {1,3,4,6,7,8,11} so that the sum of the three numbers is even? In how many ways can three numbers be selected so that their product is odd?\r
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document.write( "Would my first step be understanding that I need 2 even and 1 odd, or 3 odd to get odd and then 2 odds and 1 even and 3 even to get evens?\r
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document.write( "Thankyou Maria \n" );
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Algebra.Com's Answer #102266 by stanbon(75887) ![]() You can put this solution on YOUR website! In how many ways can three numbers be selected from the set {1,3,4,6,7,8,11} so that the sum of the three numbers is even? In how many ways can three numbers be selected so that their product is odd? \n" ); document.write( "-------------------------------- \n" ); document.write( "There are 7C3 = 7*6*5/1*2*3 = 35 sets of three numbers. \n" ); document.write( "You would have to look at each of those sets and see the sum and/or product \n" ); document.write( "is. \n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |