Mongo Match number that "begins with" query in an array of numbers
<p>in the mongo shell I am trying to query into an array of numbers</p>

<p>An example object: </p>

<pre><code>[{"name":"test", "numbers" : [76.3922, 42.9196154]}, 
{"name":"test", "numbers" : [87.938547, 42.9196154]},
{"name":"test", "numbers" : [42.9196154,87.938547]}]
</code></pre>

<p>I tried to use this to find any document what the number starts with 87</p>

<pre><code>db.TestColleciton.find( { "numbers": { $in: [ /^-87/ ] } } )
</code></pre>