Why Wine Glass Stem is so long?

What has a bottom at the top?

What month of the year has 28 days?

Can you find out the number that should replace the question mark with a valid reason?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

How many words can a pen with half refill write?

Replace the question mark with the correct number in the below-given picture?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

Make a sentence consisting of three words that have the whole alphabet.