P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Find the 8 in the below-given Image.

How can a man go eight days without sleep?

If 21x = 79x, what is the value of x?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

What have one eye but still cannot see?

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

How many letters are in the alphabet?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _