Question

For given question, a statement is followed by two conclusions. Point out the correct conclusion: (a) If only conclusion I is true
(b) If only conclusion II is true
(c) If both the conclusions are true
(d) If neither of the conclusions is true
(e) If either conclusion I or conclusion II is true
Statement: Douglas is my cousin. A cousin may be a sister's son, uncle's son or brother's son.
Conclusions:
I. Douglas is my sister's son.
II. Douglas is my uncle's son.

• (a)
• (b)
• (c)
• (d)
• (e)

Answer 1

The Correct Option is D

Concept: Possibility vs certainty in logical reasoning.
Step 1: Understand statement.
Douglas is a cousin → could be sister's son, uncle's son or brother's son.
Step 2: Evaluate Conclusion I.
Douglas is my sister's son → only one possibility, not definite → does not follow.
Step 3: Evaluate Conclusion II.
Douglas is my uncle's son → again one possibility, not definite → does not follow.
Step 4: Final conclusion.
Neither conclusion I nor II is definitely true.
Step 5: Final answer.
Thus, option (d).