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• n  a factor in a given situation whose bearing and importance is not apparent; he's still an unknown quantity"
• n  a variable whose values are solutions of an equation

• unknown

News & Articles

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• Chery Fulwin 2 Review
  Comfortable, affordable small car. Reliability remains an unknown quantity Strong rumble in when moving in reverse. Solved at the 5000 km service. I was told by the serviceman that these cars tend to tremble in reverse, but after the service it didn't happen again.
  July 26, 2013 - Carsurvey.org
• SR 73 re-open west of Waynesville
  The crash involved a tractor-trailer and one other vehicle, and the collision caused an unknown quantity of diesel fuel to spill.
  July 26, 2013 - WDTN-TV 2 Dayton