[6452] in s-news-athena
COMBINATIONAL PROBLEM -2
daemon@ATHENA.MIT.EDU (Lotto Player )
Wed Feb 15 20:02:46 1995
To: s-news@utstat.toronto.edu
From: dwh@bom.gov.au (Lotto Player )
Date: Thu, 16 Feb 1995 00:07:39 GMT
COMBINATIONAL PROBLEM -2
Can anyone help ?
Sorry, my maths background is limited.
Yes I am also interested in sets with differing numbers of elements
eg
set a 1,2,3
set b 4,5
set c 6,7
total elements 1,2,3,4,5,6,7 = 7 elements
3 from 7 = 35 combinations, but several of them have
elements which share the same set.
I did not quite get the explanation regarding this type
of problem when sets have differing numbers of elements.
Could somebody provide another example for this type of case.
My requirement is to caculate the number of combinations
of 3 from 7 who's elements do not share the same set.
COMBINATIONS (combos with * have elements sharing the same set. There are 19)
123* 234* 345* 456*
124* 235* 346 457*
125* 236* 347 467*
126* 237* 356 567*
127* 245* 357
134 246 367*
135 247
136 256
137 257
145* 267*
146
147
156
157
167*
