Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

What does Alexander the Great and Winnie the Pooh have in common?

I am white when I am dirty, and black when I am clean. What am I?

Can you place six X (crosses) in below board without making three in a row in any way ?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

What word is pronounced the same if you take away four of its five letters?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?