Comments by "Lord Skeptic" (@Lord_Skeptic) on "Zero Factorial - Numberphile" video.

  1. They are British. That is what it is called In the UK. That does make a lot more sense. It is a plural.
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  2. They are British. It would be 16.
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  3. Not really. In algebra you can use any letter (as long as that letter has not been used before in the equation (unless it represents the same number)) to represent a none specified number.
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  4. -1!=purple. Because aliens do not wear hats.
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  5. Purple. Because aliens do not wear hats.
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