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Knuckle trick for remembering the number of days in a month

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Uploaded on Jan 2, 2012

In response to Neil Conan's confusion regarding the 'knuckle trick' for remembering the number of days in a month. It surprised me that some people do not know this mnemonic, and I recently shared this with a high school student the week before last and she knew exactly what I was talking about when I mentioned it.

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