About a third of young adults say they don't know how to do this. What is it?

20% of people find this sound to be annoying. Others think it's soothing. What is it?

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90% of people who try to do this are successful. What is it?

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About a third of young adults say they don't know how to do this. What is it?

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About 1 in 220 U.S. homes have this in common. What is it?

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96% of homes in the United States have one of these. What is it?

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