Xiangjiao Jiu Shang 2.2 "Proposition" ppt Is the following thing true or false? (1) The sun comes out from the east; (2) The snow is black; (3) 3 plus 5 equals 8; (4) 3 times 2 equals 5. A sentence (declarative sentence) describing a thing, if either is true, Either it is false, then call this declarative sentence a proposition. If a proposition narrates something true, then call it a true proposition.
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