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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Sangeeta goswami
For example, if the proposition “all industrialists are capitalists” (A) is true, then the proposition “some industrialists are not capitalists” (O) must be false. Similarly, if “no mammals are aquatic” (E) is false, then the proposition “some mammals are aquatic” must be true.