This math topic focuses on calculating factorial expressions in the form of 1 over a factorial, such as \( \frac{1}{n!} \). It is a basic introduction to understanding factorial forms within the broader context of probability and statistics. The topic includes problems where students must evaluate factorial expressions for values like \( \frac{1}{3!} \), \( \frac{1}{4!} \), \( \frac{1}{2!} \), and \( \frac{1}{5!} \), choosing the correct value from multiple options. This is essential for understanding more complex problems in probability and combinatorial calculations.
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What is the value of this factorial expression?