The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?

Can you find out the total number of triangles in the given figure?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

How many times can you subtract the number 5 from 25?

Which country gets ill every time?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes