How many bricks are in the Great Wall of China?
What's the diameter of a basketball?
What is the total length of the human circulatory system?
What's the speed of the fastest recorded baseball pitch?
How much caffeine is in a typical cup of coffee?
What's the average thickness of the Earth's crust?
What's the density of copper (in g/cm³)?
How many gallons of paint are needed to paint the White House?
How much water does the average person drink per day?
How much electricity does the average solar panel generate?
What's the average growth rate of human hair?
What's the average temperature of the surface of the Sun?
At what speed does light travel in a vacuum?
What's the market cap of Intel?
What's the average speed of the Mississippi River?
How long is the Great Wall of China?
What's the average speed of a rabbit?
What's the average annual budget for a small business in the U.S.?
What is the market capitalization of Apple Inc.?
How long does it take for the Moon to rotate once on its axis?
What's the average wattage of a household microwave?
What's the average upload speed of 4G LTE?
What's the average size of a car parking space?
What is the population of the United States?
How much does the average bicycle weigh?