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