- The Pacific Northwest is home to more Waterfalls than anywhere else in North America. The Northwest Waterfall Survey was founded in order to create a thorough inventory of these outstanding natural features.
- Division by zero (Wikipedia)
In mathematics, division by zero, division where the divisor (denominator) is zero, is a unique and problematic special case. Using fraction notation, the general example can be written as a/0 where a is the dividend (numerator).
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