Q) What do you call a blonde who's dyed her hair brown?
A) Artificial Intelligence.
:
If they ALL jump off the building at the SAME TIME then the blonde jumped with the others, therefore she would've landed at the same time as anyone else. Gravity doesn't care if you don't know which way is up or down. 
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If you're going to be really nitpicky; the redhead weighed the most, which would imply she has the largest surface area. Thus she would take the longest to fall due to increased wind resistance.
And time for what is possibly the worst joke I've ever heard:
Q) What did the zero say to the eight?
A) Nice belt!
(explanation: 0 -> 8 !)