<?xml version="1.0" encoding="UTF-8"?>
<math xmlns="http://www.w3.org/1998/Math/MathML">
   <mfenced close=")" open="(">
      <mrow>
         <mi>p</mi>
         <mo>-</mo>
         <mn>1</mn>
      </mrow>
   </mfenced>
   <msup>
      <mo>!</mo>
      <mi>n</mi>
   </msup>
</math>
