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?

What happened when the wheel was invented?

Find out the missing number in the picture attached:

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

What does this rebus riddle mean?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

What is Luis Suarez's (Soccer Player) favorite tea?

Can you solve the photo plexer logic ?