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I need a regular expression that will check the first 3 positions of a column for numeric values. &nbsp;For example;<br />
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ALT1<br />
-------<br />
300BES &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;--&gt; Want this one.<br />
ABC &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
1Bliss &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;---&gt; Want this one. <br />
A3N59 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;---&gt; Want this one.<br />
VesI89 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br />
SE9000 &nbsp; &nbsp; &nbsp; &nbsp;---&gt; Want this one.
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I need a regular expression that will check the first 3 positions of a column for numeric values.  For example;

ALT1
-------
300BES          --> Want this one.
ABC                 
1Bliss            ---> Want this one. 
A3N59          ---> Want this one.
VesI89           
SE9000        ---> Want this one.

Regular Expression - checking first 3 positions of a column for numerics.

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.