  Math Central - mathcentral.uregina.ca  Quandaries & Queries    Q & Q    Topic: partitions   start over

4 items are filed under this topic.    Page1/1            Partitions of a set 2019-12-21 From Ghani:1. Are set partition "sets"? 2. If they are so then, why are both {{a}{b,c}} and {{a,b}{c}} said to be valid partitions of A ={a,b,c} despite them having different elements? (I understand that set are equal if they have the exact same elements). Thank you!Answered by Harley Weston.     Partitions into distinct parts 2015-09-19 From Brian:Looking for a formula where I can type in a number, 17 for example, and using the numbers 1 through 17 (1, 2, 3, 4 etc....), to come up with all possible combinations, when added, that will equal 17. And each number can only be used once. I've tried a few search engines but my computer stares at me blankly and scratches its head :-/.Answered by Chris Fisher.     Restricted partitions 2013-03-25 From vidya:I am having a series of numbers eg.( 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15) I can take any 5 digits eg(15,10,8,6,5) and it should not repeat and the summation should be any predefined static value . eg(44) That is (15+10+8+6+5=44) . How many summation series will result 44 ? My problem is how to find this using a formula or any other simpler automation method is there instead of checking one by one all the combinations. Plz do help me... Thnks in advanceAnswered by Chris Fisher.     Two problems 2002-10-14 From Eva: a) How many different equivalence relations can be defined on the set X={a,b,c,d}? b)Show that 6 divides the product of any 3 consecutive integers. I know it is true that 6 divides the product of any 3 consecutive integers. However, i have problem showing the proof. Answered by Leeanne Boehm and Penny Nom.      Page1/1    Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.    about math central :: site map :: links :: notre site français