How do I ace an exam if I didn't study (REALLY URGENT)?

you can do it! i've done more study in less time, so I know for a fact it can be done. you need to be extremely time efficient though, plan it out - say 1/2 hr for 10 pages, or something like that. write notes. keep revising while you're eating, or walking around. and if possible, sneak in an hour or two of sleep, it'll help lock in the information in your head. good luck!!