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?

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

Solve the equation in the image by looking at the pattern closely.

What is full of holes but still holds water?

During which month do people sleep the least?

What can go up a chimney down, but can’t go down a chimney up?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

When can we add 2 to 11 and get 1 as the correct answer?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?