I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What's the only room from which no one can enter or leave

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

The answer I give is yes, but what I mean is no. What was the question?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

What four weights can be used to balance from 1 to 30 pounds?