There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Can you count the number of triangles in the picture below?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

I don't get anymore wetter, no matter how much rain falls on me.

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Can it be possible to build a house that has all its four walls facing towards the South?