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If (n!=720), what is the value of (n)?

Answer and explanation

Correct answer: 6

By the definition of factorial, \(6!=6\times5\times4\times3\times2\times1=720\). Therefore, \(n=6\). Since \(5!=120\) and \(7!=5040\), those values cannot satisfy the condition. Exam tip: Memorising factorial values from \(1!\) to \(7!\) helps solve such questions quickly.

Related tags

Factorial NotationFactorial ValuesPermutations And CombinationsClass 11 MathematicsBasic FactorialsMathematicsClass 11 Mcq

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