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

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

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

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

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