title: How to shorten this formula?
body: <p>I create conditional formatting. So it will check multiple cells to see if at least one of them is not blank, then it will return <code>TRUE</code>. If all those cells are blank then it will return <code>FALSE</code>.</p>
  
  <p>The code is used is working perfectly, the problem is it's too long:</p>
  
  <pre><code>=(not(isblank(M6))+ not(isblank(P6))+  not(isblank(S6)) +not(isblank(V6)) + not(isblank(Z6)) +not(isblank(AC6)) + not(isblank(AF6))+ not(isblank(AI6))+not(isblank(AL6))+not(isblank(AO6))+ not(isblank(AR6))   )=1
  </code></pre>
  
  <p>The cells to be checked is skipped every 2nd column. How to shorten this formula?</p>