It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Look at the picture and find out which square is not linked with any of the other squares.

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

It is always ahead of me yet I can never see it. What is it?

What always comes into a house through the keyhole?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.