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

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Find the next number in the series

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

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Can you count the number of triangles in the given figure?

How many times in a given day, minutes and hour clock comes in a straight line ?

A girl says this to her best friend: “I was born in 1955, and I celebrated my 17th birthday last weekend.” Her best friend thinks she’s lying, but she’s actually correct. How is that possible?

What happened when the wheel was invented?