I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

Why is it very easy to weigh a fish?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

A tourist visits a small town for his research. While in the town, he decides to get a haircut. Since the town is quite small, there are only two barbers in the town � one on the North Street and one on the South Street. The barbershop on the North Street is a mess and the barber has a weird and pathetic haircut. While the barbershop at the South Street is pretty tidy and the barber as well has an impressive haircut.

Which barbershop will the tourist visit for his haircut and why?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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