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.
Statement :
Some pins are wood
Some thread are wood
All wood are nest
All nest are helmet
Conclusion:
I. Some pins are helmet
II. Some thread are nest
III. Some pins are thread
IV. No pins are thread
Answer & explanation
Correct answer: option 3

Con - I √
II √
III ⇒
IV ⇒ either III or IV follows