My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Give it food and it will live; give it water and it will die.

The centre of the third figure is empty. What digit should fit inside?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

How many times can you subtract the number two from the number fifty?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211