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

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What is the below Rebus indicate?