Yes, I am in 2387.
I managed to solve number 1 and number 3 myself last night. It was a silly mistake I made and miscounted my answer. I didn't even need to come to here for a solution...opss. The only one I'm still stuck on is the one about altitudes (number 2). I'll make sure to only post a single question when I'm absolutly stuck. Thanks for the quick feedback btw!