Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

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

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Can you find the thief by just looking at the picture below?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Which country gets ill every time?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.