There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

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

Why is the Hole below a Lock?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

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?

How many sides does a circle have?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?