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At what speed does light travel in a vacuum?

What's the average speed of the Mississippi River?

What's the average speed of a rabbit?

What's the average size of a car parking space?

How much does the average bicycle weigh?

What's the speed of the fastest recorded baseball pitch?

What's the average temperature of the surface of the Sun?

What's the density of copper (in g/cm³)?

What is the population of the United States?

How much water does the average person drink per day?

How many gallons of paint are needed to paint the White House?

What is the total length of the human circulatory system?

What is the market capitalization of Apple Inc.?

How long is the Great Wall of China?

What's the market cap of Intel?

What's the average upload speed of 4G LTE?

How many bricks are in the Great Wall of China?

What's the average thickness of the Earth's crust?

How long does it take for the Moon to rotate once on its axis?

What's the average growth rate of human hair?

What's the diameter of a basketball?

How much electricity does the average solar panel generate?

What's the average annual budget for a small business in the U.S.?

What's the average wattage of a household microwave?

How much caffeine is in a typical cup of coffee?