SomekidwithHTML
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 Sep24 awarded Autobiographer Feb24 awarded Notable Question Dec3 awarded Popular Question Jul22 awarded Popular Question Oct12 accepted What is CPCTC: Property, definition..? Oct12 comment What is CPCTC: Property, definition..? haha, sorry i don't seem to be able to read. Thanks. Oct11 comment What is CPCTC: Property, definition..? I know what CPCTC is and how to use it, I am wondering if it is a theorem, definition, or the like. Oct11 awarded Editor Oct11 revised What is CPCTC: Property, definition..? added 133 characters in body Oct11 asked What is CPCTC: Property, definition..? Sep12 comment Closed form for a sum of values of a quadratic? Where does the $(x+1)^6-x^6+4$ come from? Shouldn't it be $(x+1)^3-x^3+4$? Sep11 accepted Closed form for a sum of values of a quadratic? Sep11 asked Closed form for a sum of values of a quadratic? Sep6 accepted How to find a random number between $x$ and $y$ Sep6 asked How to find a random number between $x$ and $y$ Sep3 awarded Analytical Aug31 accepted Place of functions in order of operations? Aug31 asked Place of functions in order of operations? Aug23 comment Formula for number of lines you can draw through $n$ points All of you were a lot of help, but Andre got closest to the answer. My math teacher gave me credit for my answer, but he also said that the following answers were correct: $$\frac{1}{2}n(n-1)$$ and $$\sum_{i=1}^{n}(i-1)$$ The first one is pretty much exactly the same as Andre's answer: $$\frac{n(n-1)}{2}$$ Aug23 awarded Scholar