In the existential quantifiers lessons, JY explains how to negate statements with the universal quantifier "all." The conclusion was that "some are not" was the negation and that the new set contained 0-99 items, whereas the original "all" represented 100 ...
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At last 5 minutes, I tend to be ... For RC, when there's 5 minutes left, I still ... 1. Stay calm at last 5 minutes (first five minutes ... new passages in 3.5 minutes (or including questions ... within 8.5 minutes).