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#1 Re: Help Me ! » Number of combinations » 2011-05-19 04:35:02
I've been given a programing assignment to find every such number by my teacher, not sure where he got it from, he might have just made it up
And apart from generating vast amounts of numbers and then checking them for given parameters I am having troule finding a way to do it.
#2 Re: Help Me ! » Number of combinations » 2011-05-19 04:16:17
Yes, thats right. I would like to know the number of combinations possible (and a formula to find that number). Thanks
#3 Re: Help Me ! » Number of combinations » 2011-05-19 04:01:53
Yes, that is correct, except for Z and T (Z ≠ T ≠ 0) and AB ≠ CD ≠ EF ≠ GH.
#4 Help Me ! » Number of combinations » 2011-05-19 03:37:37
- dairymilk
- Replies: 46
Hi everyone 
, so I have this problem.
I have a 10 digit number ZTABCDEFGH (each letter represents a digit 1 to 9, or 0).
Now, what information is given about this number is that
5 of the digits have to be an odd numbers/digits, the other five - even numbers,
Z, T cannot be 0 (zero),
Z cannot be equal to T,
A, C, E, G cannot be 5, 6, 7, 8, 9, 0
pairs AB, CD, EF, GH cannot be equal (eg. if CD is 12, EF or any other pair mentioned cannot be 12).
What I need to find is the number of different combinations/permutations possible
Any help is appreciated
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