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Statements: No fish is a mammal. All whales are mammals. Conclusions: I. No whale is a fish.
II. Some mammals are not fish. Which conclusion(s) logically follow?

Competition practiceSyllogism
  • AOnly I follows
  • BNeither follows
  • CBoth I and II follow
  • DOnly II follows

Step-by-Step Solution

Whales are mammals and no mammal is a fish, so no whale is a fish (I). Since no mammal is a fish and mammals (whales) exist, some mammals are not fish (II). Both follow.
Answer: C) Both I and II follow

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