X is an unknown quantity...

but not necessarily negative. The X factor of nature does not always mark the spot. Yep I'm full of cliche today.

[Lynda McG]

Very creative!

[Ingrid]

I like the colors in this picture!

[Rob Z]

Good creation Liana! I have an X joke -- On the maths paper the triangle was drawn with an "X" on one side - numbers on the others. The question read "Find X". The student answered by circling the X and writing - " here it is!!" :)

[Liana Bull]

@robz Oh that is too funny.