Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
Quantum
Quantum asked in Science & MathematicsMathematics · 8 years ago

Can you tell me how to find the number of permutations or combinations in this?

4P3

2 Answers

Relevance
  • novriady
    Lv 5
    8 years ago

    nPr = n!/(n-r)!

    with n! is factorial of n, calculated as follows:

    0! = 1

    n! = n(n-1)!

    Hence:

    4P3 = 4!/(4-3)! = 24

  • Mike G
    Lv 7
    8 years ago

    4!/1! = 24

Still have questions? Get your answers by asking now.