{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

LrTrChVIIISIBscCntgPrncplPrm - Dr Raja Latif Math...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Dr. Raja Latif. Math 131(043)8.1, Pg:1 Chapter 8 : Introduction to Probability and Statistics 8 . 1 : Basic Counting Principle and Permutations Basic Counting Principle: ............ n 1 . n 2 .... n k . Permutation: An ordered arrangement of r objects, without repetition, selected from n distinct objects is called a PERMUTATION of n objects taken r at a time. The number of such permutations is denoted by n P r n n 1  n 2 .......... n r 1 n n 1  n 2 .......... n r 1  n r  n r 1 .... 2  1 n r  n r 1 .... 2  1 n ! n r ! . 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Dr. Raja Latif. Math 131(043)8.1, Pg:2 1.404T8.1B6. AUTO ROUTES A person lives in city A and commutes to automobile to city B . There are five roads connecting A and B . a How many routes are possible for a round trip? b How many round-trip routes are possible if a different road is to be used for the return trip? ANS (a)There are 5 roads from A to B , and 5 roads from B to . By the basic counting principle, the number of possible routes for a round trip is 5.5 25. (b)There are 5 possible roads from A to B . Since a different road is to be used for the return trip, there are only 4 possible roads 2
Image of page 2
Dr. Raja Latif. Math 131(043)8.1, Pg:3 from B to A . By the basic counting principle, the number of possible round-trip routes is 5.4 20 . 2.404T8.1B 8 MULTIPLE CHOICE EXAM In how many ways is it possible to answer a six-question multiple-choice examination if each question has four choices (and one choice is selected for each question)?
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern