Question
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All Hand are Arm. Some Hand are Leg. No Leg is Tongue. Conclusion:
I. A few Hand are not Tongue.
II. No Arm is Tongue.
III. A few Leg are Arm.
Solution
Some Hand are Leg (I) + No Leg is Tongue (E) β Some Hand are not Tongue (O). Hence conclusion I follows. Some Hand are Leg (I) β conversion β Some Leg are Hand (I) + All Hand are Arm (A) β Some Leg are Arm (I) + No Leg is Tongue (E) β Some Leg are not Tongue (O). Hence conclusion II does not follow but conclusion III follows.
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