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

Spot what is wrong here in below Picture?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

What is the next number in this series?

4,12,84,3612....

Which is faster, Heat or Cold ? Explain.

Can you identify the hidden rebus in the image below?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

How can you take 2 from 5 and leave 4?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Prove that the below maths equation is true.

8 + 8 = 91