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I was trying to edit this post. I was having trouble understanding the question at first glance, got confused because I was expected some monentary value. Yes I do understand it doesn't really change the mathematics of the question; however, it is what one expect to see when doing these problems.

I tried to put in $\euro$ however, it did not render. Thus the reason for this post, as the title states.

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Though it's not ideal, you can just put the Unicode euro symbol in a piece of MathJax and it will come out okay: for example,

$€100 \times 2$

produces

$€100 \times 2$

Looking at the advice given on the TeX.SE thread about the euro symbol, it seems that a "proper" solution would require loading esoteric packages that aren't available automatically in MathJax. Whether or not there's a way of making MathJax load those packages, I don't know.

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  • $\begingroup$ guess, will just have to keep with gold coins instead of the euro. $\endgroup$ – yiyi Mar 4 '13 at 2:16
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Detexify is a good site to find unknown LaTeX characters.

It finds \EURdig \EUR \texteuro \EURtm and \EURhv, none of which are recognized by MathJax. So it seems that we need to resort to using \unicode{0x20AC}: $\unicode{0x20AC}$

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