data/mathematical/3.mml
<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><mo stretchy="false">(</mo><mi>p</mi><mo>−</mo><mn>1</mn><mo stretchy="false">)</mo><msup><mo>!</mo> <mi>n</mi></msup></mrow><annotation encoding='application/x-tex'>(p-1)!^n</annotation></semantics></math>