There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

What time is it when an elephant sits on a fence?