Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Seek and Puzzle: Only the Sharpest Eyes Can Spot the Hidden Star in 10 Seconds

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

Imagine you are in a room with no windows or doors. How will you get out?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

If an electric train is travelling south, then which way is the smoke going?

Why do people go to bed?

Solve the mathematical equation in the picture below.