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

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

Find the next number in the series

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

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second.

Can you calculate the distance between the fourth and the first village ?

I am the fastest animal but cannot climb the tree. What am I?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

What makes this number unique: 8,549,176,320?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you tell a 3D object that has just two surfaces?