Ha. Trick question! All of them are already full of air, and niether the flow rate nor the direction (or lack) of gravity was specified anyway. You lose. :)
That sounds like a great plot device for a scifi show! Suddenly humans start appearing in other colors, and it turns out the aliens are color blind (or just got the UV spectrum right).
Obviously there is no number to quantify how many numbers there are, only a weaker concept of it being unbounded and limitless. null or undefined if you prefer.
Instead of "has infinite digits", I prefer to say that it CANNOT be expressed as a base10/decimal number. If you choose a different base (base-pi for example), then it very much has finite digits... :)
I like to add "0"... which somehow relates to not having untested restore systems.