There are 13 diamonds, and 4*3=12 face cards, of which 3 are diamonds. So total of "diamond or face card" is 13+12-3=22. => Probability of drawing a diamond OR a face card from a full 52-card deck is 22/52=11/26.
I think that the altimeter would read as '0'. Positive readings would show that she was above sea level and negative readings we would show that she was below sea level. I hope that this helps