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Subjects
Class 11MathematicsPermutations and CombinationsFactorial notationEasy
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If (x=4!) and (y=3!), what is the value of (xy)?

Answer and explanation

Correct answer: 144

Here, 4! = 4 × 3 × 2 × 1 = 24 and 3! = 3 × 2 × 1 = 6. Therefore, xy = 24 × 6 = 144, so option C is correct. 132 is not the correct product of 24 and 6. Exam tip: Evaluate each factorial first, then substitute the values into the given expression.

Related tags

Factorial NotationPermutations And CombinationsClass 11 MathematicsFactorial CalculationProduct Of VariablesMathematicsClass 11 Mcq
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10 more MCQs
  1. 1What is the value of 5!?
  2. 2What is the value of 0!?
  3. 3What is the value of (1!+3!)?
  4. 4What is the simplified value of \(\frac{6!}{4!}\)?
  5. 5What is the value of (\frac{7!}{5!,2!})?
  6. 6Which form can represent (n!)?
  7. 7What is the value of (4!+2!)?
  8. 8What is the value of 8!/7!?
  9. 9How can (9\times8\times7) be written in factorial form?
  10. 10For a positive integer \(n\), which of the following statements gives the correct definition of \(n!\)?
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