

Logical Deduction - Verbal and Reasoning
Q1: Statements: All oceans are rivers. Some springs are rivers. All wells are springs.
Conclusions:
A None follows
B
Only either I or III, and IV follow
C
Only either II or IV, and III follow
D All follow
E
Only either II or IV, and I follow
ANS:C - Only either II or IV, and III follow Explanation: III is the converse of the first premise and so it holds. All oceans are rivers. Some springs are rivers. Since the middle term 'rivers' is not distributed even once in the premises, no definite conclusion follows. All wells are springs. Some springs are rivers. Since the middle term 'springs' is not distributed even once in the premises, no definite conclusion follows. However, II and IV involve the extreme terms and form a complementary pair. Thus, either II or IV follows. |


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