>>>>>>8 4 1.
>>>>>
>>>>>No, that is not the solution.
>>>>>> I guess the question is when is a son old enough to have a room upstairs.
>>>>>
>>>>>Any statement about "the oldest son" can be used for the third clue; what the son does is irrelevant. For example, "My oldest son is playing in the park", or "My oldest son is asleep", or "My oldest son likes such-and-such music".
>>>>>
>>>>>>You didn't say old man which would rule out an answer like 7 4 and 2.
>>>>>
>>>>>You don't know the age of the second man, but we can be quite sure that he knows his own age.
>>>>
>>>>Ok. That is simply ruling an elder set of twins.
>>>>Let me think on it some more.
>>>
>>>Simply get all the age combinations that add up to 13. There are not that many of them.
>>
>>10 2 1 20
>>9 2 2 36
>>8 4 1 32
>>8 3 2 48
>>7 5 1 35
>>7 4 2 56
>>7 3 3 63
>>
>>Ok. :)
>
>There are actually a few more combinations.
>
>

>11 1 1   11
>10 2 1   20
> 9 3 1   27
> 9 2 2   36
> 8 4 1   32
> 8 3 2   48
> 7 5 1   35
> 7 4 2   56
> 7 3 3   63
> 6 6 1   36
> 6 5 2   60
> 6 4 3   72
> 5 5 3   75
> 5 4 4   80
>

>
>... a total of 14 combinations. Question: Why wasn't the second piece of information enough to figure out the ages?

And also your clues were very good

Not quite giving up the answer.