{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

LrTrChVIIISIBscCntgPrncplPrm

# LrTrChVIIISIBscCntgPrncplPrm - Dr Raja Latif Math...

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

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

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

View Full Document
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
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)?

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern