How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What is the largest number you can write with just 3 digits?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside. The man said, "Oh! I am really sorry, I thought this was my room." He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man. What made her suspicious of that man? He might have been genuinely mistaken.

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

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

If eleven plus two equals one, what does nine plus five equal?