Can you name some countries which do not have the alphabet 'A' in them?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

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

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

What happened when the wheel was invented?

Trying to tease Birbal, Akbar gave him one gold coin and ask him to buy
* something for him to eat
* something for him to drink.
* something to feed the cows
* something to plant in the garden
and most important you need to buy only one thing.

What must Birbal buy to silence Akbar?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?