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

In it's 51 year history, this only happened once on Wheel Of Fortune. What is it?

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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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