Statement: The sky is overcast. Conclusions: I. It will definitely rain. II. It might rain. MCQ with Answer and Explanation

Explanation:
The statement means not everything that glitters is gold; it doesn't say that some things that glitter are gold (they could be none). II is false because gold may not always glitter. Neither follows.

Explanation:
Fully booked = no vacant seats (I). Popularity cannot be concluded; could be a small plane. I follows.

Explanation:
The musicians who are singers must also be dancers because all singers are dancers. Therefore, some musicians are definitely dancers. Conclusion I is true, and Conclusion II is false.