Combinatorics question


by Neitrino
Tags: combinatorics
Neitrino
Neitrino is offline
#1
Nov25-11, 02:22 AM
P: 133
Please help me with combinatorics:
I have three sets:
A with elements (a1 ..ai )
B with elements (b1 ..bk )
C with elements (c1 ..cj )

Pls help me to work out how many sets ABC shall I have that contain each element from sets A, B and C

Thanks much
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epsi00
epsi00 is offline
#2
Nov25-11, 07:44 AM
P: 84
You can try to simplify the problem first by considering something you can do by simple enumeration with A (a1,a2) B(b1,b2) and C(c1,c2). Then you try to generalize your results. Of course there are better ways, fancier etc but at least you have a starting point.


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