query: Factorial of zero is 1. Why?
positive_passages.docid: 2959
positive_passages.text: Prove $0! = 1$ from first principles
negative_passages.docid: 9126
negative_passages.text: How many bits are in factorial?
negative_passages.docid: 22397
negative_passages.text: Is 0.9999... equal to -1?
negative_passages.docid: 97534
negative_passages.text: Ruby factorial function
negative_passages.docid: 68235
negative_passages.text: Is there a way to solve for an unknown in a factorial?
negative_passages.docid: 62163
negative_passages.text: How to find the factorial of a fraction?
negative_passages.docid: 14150
negative_passages.text: Zero to the zero power – is $0^0=1$?
negative_passages.docid: 14559
negative_passages.text: Binomial[-1,-1]
negative_passages.docid: 26693
negative_passages.text: What do numbers starting with 0 mean in python?
negative_passages.docid: 95350
negative_passages.text: Why does 1 // 0.1 == 9.0?
negative_passages.docid: 102968
negative_passages.text: How to find out if a binary number is zero
negative_passages.docid: 107390
negative_passages.text: Why is (-1)(-1) = 1?
negative_passages.docid: 139411
negative_passages.text: Finding $\pi$ factorial
negative_passages.docid: 122737
negative_passages.text: How to understand why $x^0 = 1$, where $x$ is any real number?
negative_passages.docid: 115506
negative_passages.text: What's wrong with this demonstration? (1 = -1)
negative_passages.docid: 129151
negative_passages.text: Why do computers only use 0 and 1?
negative_passages.docid: 120913
negative_passages.text: How would you write a non-recursive algorithm to calculate factorials?