Why Do These Math Jokes Make You Groan?

[JonF]

$$\frac{\sinx}{n} = 6$$

 

[murshid_islam]

$$\frac{\sinx}{n} = 6$$

i didnt get this one.

edit: oh, i see. you wanted to write $$\frac{\sin x}{n} = 6$$

 

[jing]

There is three erors in this post.

 

[jing]

I will finish this post before you can say Jack Rob