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

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

How is a fly different from a mosquito?

Can you place six X (crosses) in below board without making three in a row in any way ?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Find the number of squares in the below-given picture.

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"