Hi Hilmar,

>The third clue eliminates the combination 6,6,1: the man has ONE oldest son, not twins.
>
>Therefore, the ages are 9,2,2.

It is possible that twins are born on different days, so even with twins you have the older one and the younger one.

From: http://www.nomotc.org/library/twinning_facts.html

Superfetation occurs when a women ovulates more than one egg but the eggs are released at different times, sometimes up to 24 days apart, and they are fertilized when they are released. The resulting twin pregnancy has different conception dates, so the babies may be quite different in size. Days or weeks may separate the births. It is quite an unusual event. In some cases, the births of twins may be weeks or months apart due to deliberate medical intervention. This is called interval birth.

So 6,6,1 could be a valid answer <s>

Regards,