How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Can you make a fire with just a single stick?

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 number comes next in the series?

5 15 5 18 5 24 14 20 _

Why 1729 is a magic number? Answer Logically.

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What does this rebus mean?

O
N
C
E
TIME

Using exactly three matchsticks, can you divide the area into two equal parts?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?