How's the next riddle coming along?

[Nohimn]

Can anyone do it?!

[Nohimn]

Yeah, I'll try something harder

If you were given a multiple choice math test, and there were five answers, but there was no question, which of the following would it be?

(a) square root of .25
(b) 1 1/4
(c) 1/2
(d) 125% of 1
(e) 5^2

[Arglaar]

The answer is E because A and C are the same (Both .5) and B and D are the same (Both 1.25)... therefore the only answer given that is not the same, has to be the correct one.

[Nohimn]

So, next riddle:
What's a mirror that doesn't give an image?

[Unregistered]

A piece of glass.