It’s gotta be more than 10 guys.
It sure appears so. That approx. 600 mile sea route I mentioned is fairly direct - the boats could follow the Pakistani coastline for part of it, but there is a good 100 miles or more over open water as they get close to Mumbai. I suppose they could have hugged the Indian coastline (making the trip even longer) but that would seem to raise the possibility of being detected? I’d guess those are really BUSY waters, though. (?)
I don't know where that number came from. There are supposedly 7 terrorists at Oberei and 5 at Chabad House, and there were at least 10 targets and 9 dead terorists so far. I'd be very surprised if the force was smaller than 30.
It sounds bigger than just 10, but how many did it take to bring down the World Trade Center and hit the Pentagon?