It didnt look right when I put the answer in, Geezer, so I've had another think, and reckon its 130.
OK, here goes..........11 races equals 55 doubles ( I think we're agreed on that). But then, surely, if you have two selections in one race, you are looking at MORE possibilities, not less. I am thinking along the lines of 55 doubles, PLUS ten extra doubles for each second selection ie 60, then 15 extra doubles for the second selections on their own. So 55 plus 60 plus 15 equals 130.
Crikey, I'm even more confused now that I am reading it back ha ha.
I reckon this is one for stokemaverick!!