(14) Is there any difference in meaning between, “All illogical work is unscholarly” and “No illogical work is scholarly?” Explain by circles.
(15) State the logical process involved in passing from each proposition to its succeeding one:
(1) “All men are imperfect.”
(2) “No men are perfect.”
(3) “No perfect beings are men.”
(4) “Some not-men are perfect beings.”
(5) “Some perfect beings are not-men.”
(6) “Some perfect beings are not men.”
(16) It is sometimes said that in sub-contraries there is really no opposition. Do you agree? Give arguments.