The binomial coefficient is hiding here:

**Binomial coefficient**

Similar to how fractions may be typed, a convenient way to automatically bring out the binomial coefficient ^{n}C_{r} can be achieved using the \binom command

`[tex]\binom{n}{k}=\binom{n}{n-k}[/tex]`

But as for writing \( ^n C_k \) like that, I didn't see any point in doing them because there's no shortcut (or even proper way) of writing it. (Reason is because internationally nobody uses that notation.) They can only be typed using old methods, so they didn't really deserve their own section in my opinion. But thanks for the remark.

Edit: However I will make a remark in how the factorial is just typed the old way.