Can you move 2 matchsticks to form four equal sized squares.

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

How many bananas can you eat if your stomach is empty?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

Which organisation is a specialized agency of the UN that deals with global health issues?

a) World Trade Organization (WTO)
b) World Health Organization (WHO)
c) International Monetary Fund (IMF)
d) United Nations Educational, Scientific and Cultural Organization (UNESCO)

Solve the counting riddle by identifying the number of triangles in the given picture.

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

What's the next in the series?

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