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Word 2013 how to format combination/permutation notation properly??

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Unread 24-09-2015, 11:08 AM   #1
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Word 2013 how to format combination/permutation notation properly??

I hope this is the right forum in which to post this, and I really hope someone here can help! I teach math and statistics, so I have to write a lot of equations, and recently upgraded my Office suite to Office 2013. I like the new equation editor... when I can make it work! But I can't figure out how to get the proper formatting for a permutation or combination, e.g., nCr with the n and r subscripted. I can't believe there isn't a template for this in the equation editor - there used to be!! Here is what I've tried:



In the first version, I used the built-in template for an item followed by a subscript, twice, and just put nothing in the first part. This gives the right appearance, but there is no way to get rid of that box.

In the second attempt, I entered the whole 13C4 and changed it to "regular text" in the equation editor, then changed the 13 and the 4 to subscripts. This might be what I end up having to go with, but I want the n and r to be lowered.

In the third attempt, I thought I had outsmarted it! I took what I had in the second attempt, and then went into the font editor and "lowered" the n and r by 3 points. Perfect!! EXCEPT that now it cuts off the bottom of the expression - wth??


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Unread 25-09-2015, 05:33 PM   #2
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Re: Word 2013 how to format combination/permutation notation properly??

An interesting question! I can't seem to find a standard way of doing it but this is what I did.

1. In equation editor, click the 2nd subscript box and enter [C][r].

2. Select [C] and click the first-subscript button in the menu. Enter [n] as a pre-subscript.

3. Add a space between [n] and [C].

The final result will look like this. [n] [C] [r]

See the attached file for a screenshot.

nCr.jpg

Good luck!

Last edited by Strider; 25-09-2015 at 05:41 PM..
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Unread 25-09-2015, 07:05 PM   #3
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Re: Word 2013 how to format combination/permutation notation properly??

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Strider!! This was so helpful! I must confess that I was not able to re-create your example, but in trying to, I fooled around with the subscript options a bit more, and here is what I figured out.

First, I selected the item-then-subscript (the 2nd script template) and entered the Cr.

Then, I selected the C, and selected the sub&super-script-then-item (the 4th script template), which gives me this:



Now, I enter my n value in the bottom box. This still isn't quite right, because the upper box screws up the spacing, if I want to put anything else in the expression (like parens, etc).... but then I realized that if I go into the upper box and simply enter a [space], it solves that problem! Here is the screenshot before adding the space, and then after:

^^This last result is exactly what I wanted! It still seems sort of "hacked" together, but that's ok - I'll take it!! Thank you for leading me in the right direction!!

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