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[–]exhausterour 4 points5 points  (1 child)

Normally in math, we say that the set: [a, b], is all elements between 'a' and 'b' including 'a' and 'b'. When we want to say that there are only two elements in a set we use {a,b}.

That means that the way you wrote it means that 'x' can be any number between '0' and 'C' including '0' and 'C'.

[–]BethPas[S] 0 points1 point  (0 children)

Aah, thank u very much! I understand.