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

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

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?

The dirtier I get, the whiter I look. Who am I?

When it is alive we sing, when it is dead we clap our hands. What is it?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

I have teeth but i don't bite. Who Am I ?

What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?