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What is the value of \(\frac{7!}{6!,1!}\)?

Answer and explanation

Correct answer: 7

Since \(7!=7\times6!\) and \(1!=1\), \(\frac{7!}{6!,1!}=\frac{7\times6!}{6!\times1}=7\). Therefore, the correct answer is 7. The number 6 is not the result; the factor \(6!\) cancels, leaving 7. Exam tip: In factorial fractions, expand the larger factorial up to the smaller factorial and cancel common factors.

Related tags

Factorial NotationFactorial SimplificationPermutations And CombinationsClass 11 MathematicsMathematicsClass 11 Mcq

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