title: How to find common elements from multiple vectors?
body: <p>Can anyone tell me how to find the common elements from multiple vectors?</p>
  
  <pre><code>a &lt;- c(1,3,5,7,9)
  b &lt;- c(3,6,8,9,10)
  c &lt;- c(2,3,4,5,7,9)
  </code></pre>
  
  <p>I want to get the common elements from the above vectors (ex: 3 and 9) </p>