Why Wine Glass Stem is so long?

Prove that twice of ten is the same as twice of eleven.

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

I am the fastest animal but cannot climb the tree. What am I?

What is the below Rebus indicate?

Name a key which is hardest to turn.

I have branches, but no fruit, trunk or leaves. What am I?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?