Occurrences in Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg106350] Occurrences in Mathematica*From*: George <gtatishvili at gmail.com>*Date*: Sun, 10 Jan 2010 03:28:47 -0500 (EST)

Hi, I have a very big list of elements and I need Mathematica to give me only those elements which occure only once... Could anybody advise me please how to write the code for that? Thks much George

**Follow-Ups**:**Re: Occurrences in Mathematica***From:*Murray Eisenberg <murray@math.umass.edu>

**Re: Occurrences in Mathematica***From:*Leonid Shifrin <lshifr@gmail.com>

**Re: Occurrences in Mathematica***From:*"Harvey P. Dale" <hpd1@nyu.edu>

**Re: Occurrences in Mathematica***From:*DrMajorBob <btreat1@austin.rr.com>

**Re: Occurrences in Mathematica***From:*brien colwell <xcolwell@gmail.com>