Just a question about odds. Anyone know what the odds are of cracking two eggs and getting double yolks in each one?

Wish I'd taken a pic now.

That's quite difficult to calculate, but I suspect if a batch of eggs contains one double yolker then it's not that surprising to fond a second one. Some hens lay a lot of them, while most rarely if ever lay them.

I've only had one in my life, and I guess I must have cracked a couple of thousand.

about 5 years back we had a double then a single then a double in 3 eggs. (Sainsbury's best )

Well, it's a one in a thousand eggs that are double yolkers. So I'm told. By the Daily Mail. (See article below.)
So, presumably, the odds don't vary between eggs. You might have one had one double yolk egg, but that doesn't affect the chances of the next one being a double, or does it? Logic would say not, surely?

http://www.dailymail.co.uk/sciencetech/ ... yoker.html

The article you linked to agrees with what I did in my earlier post. Namely, yes - the events are not independent.

My uncle gets his eggs from a local farmer near Dunfermline, 30 at a time. Usually only a couple of them are single yolk eggs.

I always bring a tray home with me when I visit.