Question 891543
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I already answered this, both with this misspelling as well as the
correct spelling.

Assuming that you really meant
this misspelling "MISSISIPI", the 3 things

M,SSS,P 

can be arranged in 3! = 6 ways:

 M SSS P
 M P SSS
 SSS M P
 SSS P M
 P M SSS
 P SSS M

Then the 4 I's can be placed only 1 way in each of
those so that no I's come together:

<font color="red"><b>I</font></b>M<font color="red"><b>I</font></b>SSS<font color="red"><b>I</font></b>P<font color="red"><b>I</font></b>
<font color="red"><b>I</font></b>M<font color="red"><b>I</font></b>P<font color="red"><b>I</font></b>SSS<font color="red"><b>I</font></b>
<font color="red"><b>I</font></b>SSS<font color="red"><b>I</font></b>M<font color="red"><b>I</font></b>P<font color="red"><b>I</font></b>
<font color="red"><b>I</font></b>SSS<font color="red"><b>I</font></b>P<font color="red"><b>I</font></b>M<font color="red"><b>I</font></b>
<font color="red"><b>I</font></b>P<font color="red"><b>I</font></b>M<font color="red"><b>I</font></b>SSS<font color="red"><b>I</font></b>
<font color="red"><b>I</font></b>P<font color="red"><b>I</font></b>SSS<font color="red"><b>I</font></b>M<font color="red"><b>I</font></b>

Answer: 3!*1 = 6

Edwin</pre>