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What is the simplified value of \( \frac{8!}{6!} \)?

Answer and explanation

Correct answer: (56)

A quotient of factorials can usually be simplified by expanding only the numerator until the denominator appears. This reveals a common factorial factor that cancels. Such cancellation is safer and faster than computing 8! and 6! separately, especially because factorial values grow rapidly.

Since \(8!=8\times7\times6!\), we have \(\frac{8!}{6!}=\frac{8\times7\times6!}{6!}=8\times7=56\). Therefore option A is correct. The value 48 would come from an incorrect product, 14 from adding rather than multiplying, and 336 from failing to cancel or using an unrelated calculation. The expression is a factorial quotient, not a sum or ordinary difference.

Related tags

PermutationsCombinationsFactorialHard

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