Are You a Counting Pro?
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Questions and Answers

Which principle states that if an event E can occur in m different ways and associated with each way of occurring of E, another event F can occur in n different ways, then the total number of occurrence of the two events in the given order is m × n?

  • Multiplication principle (correct)
  • Permutations
  • Addition principle
  • Fundamental principle of counting

    • What is a permutation?

  • An arrangement of objects in a definite order (correct)
  • An arrangement of objects in any order
  • A selection of objects without a specific order
  • A combination of objects with repetition

    • What is the formula for the number of permutations of n objects taken r at a time?

  • nPr = n! / (n-r)!
  • nPr = (n-r)! / r!
  • nPr = r! / (n-r)!
  • nPr = n! / r! (correct)

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