It strongly depends on the person, some are faster than others.
JCTI takes at least an hour for nearly all people with high scores. 2-3 hours isn’t too much.
CFNSE takes 2 to 5 hours, according to the estimation on the website—it’s an accurate estimation IMO. A possible strategy is to do it “quickly” (for 2-5 hours or so) and leave everything you couldn’t answer definitely for the last. Then spend 30-60 minutes on each of those. I think this isn’t going to artificially inflate your score, and I’m quite certain that someone with 100-110 IQ can’t figure out the patterns for any of the hardest questions, even if he spends hours/days on each.
How long? And what about the other one?
It strongly depends on the person, some are faster than others.
JCTI takes at least an hour for nearly all people with high scores. 2-3 hours isn’t too much.
CFNSE takes 2 to 5 hours, according to the estimation on the website—it’s an accurate estimation IMO. A possible strategy is to do it “quickly” (for 2-5 hours or so) and leave everything you couldn’t answer definitely for the last. Then spend 30-60 minutes on each of those. I think this isn’t going to artificially inflate your score, and I’m quite certain that someone with 100-110 IQ can’t figure out the patterns for any of the hardest questions, even if he spends hours/days on each.