20. All whales are mammals.
All mammals are animals.
Therefore, all animals are whales.
a) fallacy of four terms b) illicit major c) illicit minor d) undistributed middle
21. All terriers are dogs.
But all terriers are mammals.
Therefore, some mammals are dogs.
a) Figure 1, AAI b) figure 3, AII c) figure 3, AAI d) figure 1, AII
22. Every cobra is a snake.
But no worm is a cobra.
Therefore, no worm is a snake.
a) Valid, Figure 2, AEE b) invalid, illicit major c) valid, figure 1, AEE d) invalid, undistributed middle
23. Some drinks are poisonous.
But all juices are drinks.
Therefore, some juices are poisonous.
a) Valid, Figure 1, IAI b) invalid, illicit minor c) valid, figure 1, OAO d) invalid, undistributed middle
24. What fallacy is committed in the syllogism "All mothers are female.
But some students are female.
Therefore, some students are mothers.
a) illicit minor
b) undistributed middle.
c)fallacy of four terms
d) illicit major
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