Fundamental Counting Principle 2.1 Page 66 [And = *, Or = +]
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1 Math 3201 Assignment 1 of 1 Unit 2 Counting Methods Name: Fundamental Counting Principle 2.1 Page 66 [And = *, Or = +] Identify the choice that best completes the statement or answers the question. 1. Eve can choose from the following notebooks: lined pages come in red, green, blue, and purple graph paper comes in orange and black How many different colour variations can Eve choose if she needs one lined notebook and one with graph paper? A. 6 B. 8 C. 12 D A combination lock opens with the correct three-digit code. Each wheel rotates through the digits 1 to 8. How many different three-digit codes are possible? A. 24 B. 64 C. 512 D A combination lock opens with the correct three-digit code. Each wheel rotates through the digits 1 to 8. Suppose each digit can be used only once in a code. How many different codes are possible when repetition is not allowed? A. 21 B. 63 C. 256 D How many possible ways can you draw a single card from a standard deck and get either a heart or a club? A. 2 B. 13 C. 14 D. 26 Factorials and Permutations 2-2 Page Evaluate. 8! + 1! A B C D Evaluate. A. 0 B. 1 C. 3 D.
2 7. Identify the expression that is equivalent to the following: HW Page 82 A. N B. n C. n 2 D. n 3 8. Identify the expression that is equivalent to the following: A. B. C. n 2 D. n! 9. Solve for n, where n N. HW Page 82 A. 13 B. 15 C. 17 D Solve for n, where n I. A. 8 B. 9 C. 10 D. 11 Permutations 2-3 [without or with conditions see notes HW Page 93] 11. How many different permutations can be created when 7 people line up to buy movie tickets? A. 49 B. 128 C. 720 D Evaluate. 21P 2 A. 441 B. 420 C. 399 D Suppose a word is any string of letters. How many three-letter words can you make from the letters in REGINA if you do not repeat any letters in the word? A. 20 B. 16 C. 216 D. 120
3 14. How many ways can 7 friends stand in a row for a photograph if Sheng always stands beside his girlfriend? [Items together treat as one unit] A B C. 360 D How many ways can 8 friends stand in a row for a photograph if Molly, Krysta, and Simone always stand together? [Items together treat as one unit] A B C D Permutations when Objects are Identical (Repetition) 2.4 HW Page 104 n! abc!!! 16. How many different arrangements can be made using all the letters in CANADA? A. 120 B. 180 C. 360 D How many different permutations can be made from the word STATISTICS? A B C D [Combinations 2-6 HW Page 118] 18. There are 14 members of a student council. How many ways can 4 of the members be chosen to serve on the dance committee? (No Order!) A B C D There are 14 members of a student council. How many ways can 7 of the members be chosen to serve on the dance committee? A B C D Evaluate. A. 130 B. 126 C. 122 D. 118
4 21. Evaluate. A. 0 B. 1 C. 11 D. 22 Combinations with Conditions and FCP..HW Page Suppose that 3 teachers and 6 students volunteered to be on a graduation committee. The committee must consist of 1 teacher and 2 students. How many different graduation committees does the principal have to choose from? A. 45 B. 60 C. 90 D Suppose that 10 teachers and 8 students volunteered to be on an environmental action committee. The committee must consist of 2 teachers and 2 students. How many different environmental action committees does the principal have to choose from? A. 45 B. 73 C D Identify the term that best describes the following situation: Determine the number of arrangements of six friends waiting in line for movie tickets. A. Permutations B. Combinations C. Factorial D. none of the above 24. Identify the term that best describes the following situation: Determine the number of pizzas with 4 different toppings from a list of 40 toppings. A. Permutations B. Combinations C. Factorial D. none of the above MIXTURE 25. Ten friends on bicycles find an empty bike rack with exactly ten spots for bikes. How many ways can the ten bikes be parked so that Elsa and Rashid are parked next to each other? A B C D Ten friends on bicycles find an empty bike rack with exactly ten spots for bikes. How many ways can the ten bikes be parked so that Elsa is at one end of the bike rack? A. 9! B. C. 10! D.
5 27. Evaluate. A. 330 B. 660 C. 990 D How many different routes are there from A to B, if you only travel south or east? A. 16 B. 24 C. 28 D. 56 Fundamental Counting Principle Part II Show All Workings 1 In Newfoundland and Labrador, a license plate consist of a letter-letter-letter-digit-digit A) How many license plates are possible if repetition is permitted? B) How many license plates are possible if repetition is not permitted? C) How many license plates are possible if the first letter must be a C and the last digit is 9 with and without repetition? 2 Draw a tree diagram to display and list all possible outcomes for the rolling of a single di, the tossing of a dime and the flipping of a quarter. Use it to determine the number of ways you can get a number greater than three on the di and get heads on the dime and the quarter.
6 3 In how many ways can a teacher seat 6 girls and 4 boys in a row 10 seats if a boy must sit at the end of each row? Factorial Notation and Permutations 4 Evaluate without a calculator (Show workings!) 102! 300! 8! A) B) C) D) 10 P2 E) 6 P 6 100! !2 5!3! n! 2( n 3)! 5 Solve for n: n N A) 182 B) 180 C) n P2 30 ( n 2)! ( n 1)! Permutations with No Conditions n P r 6 A) How many ways can you select a committee that must have a president, vice president and treasurer from a group of 12 people? [Use npr as well as the FCP]
7 B) How many ways can you select a team of 5 different positions to play on a starting lineup for a basketball team (left guard, right guard, center, left power forward, right power forward)? What if your tallest player must be the center? Permutations Problems with Conditions/Cases Conditions: Type 1) Two or more objects must be kept together [Items together must be treated as one object] 7 A) How many arrangements can be made from the word LOCKERS if L and S must be kept together? B) How many ways can you stand Israel, Jean, Kelly, Liam and Mary in a line if: i) there are no restrictions ii) Liam and Mary must be side by side. (Treat as One) iii) Jean and Kelly cannot stand side by side. (Treat Separately) Type 2) results At most or At least : this means you must consider 2 or more cases and add the 8 To open a lock on a storage locker door pass codes must be comprised from at least a 4, 5, or 6 digit pass code from the digits 0 to 9. If repetition is not permitted, determine the total number of pass codes possible. (3 cases)
8 9 An alarm code must contain at least 3 letters up to a maximum of 5 letters along with 3 digits selected from the numbers 0 to 9. i) Determine the total amount of codes possible if repetition is possible amongst the letters only. (3 cases) ii) If repetition is not permitted whatsoever. 10 Determine all the arrangements (of any number of letters 1, 2, 3, or 4) of the word TASK? (Why are there 4 cases here?) Type 3 Arrangements when items are Identical. n! abc!!! 11 How many ways can you arrange the word BANANAS? 12 Show that there are only 120 distinct 5 letter arrangements of the word GREAT but only 60 of the word GREET. 13 A clerk has 3 different best selling novels. He has 6 of each. A) How many different ways can you arrange them if each type must stay together? (Items together treat as one of each)
9 B) How many different ways can all the books be arranged? 14 Page 105 Number 9A 15 How many ways can you arrange the letters in CANADA if C must be first? 16 Compute by showing all workings: Combinations nc r Or n r A) 15 C 6 B) 9 3 C) 30C Solve for n: 1C1 40 n
10 Combination Problems with Conditions/Cases 18 The student council has decided to form a sub-committee of 6 members to plan graduation decoration. There are no positions on this committee. There are a total of 13 student council members: 6 male, 7 female. A) How many ways can the committee consist of EXACTLY 4 males? B) How many ways can the committee consists of at least 4 females? (3 cases here! C) How many committees can be formed with no males? 19. Question 1 Page 118 MUST be completed to show you understand the difference between Permutation and Combinations
Fundamental Counting Principle 2.1 Page 66 [And = *, Or = +]
![Fundamental Counting Principle 2.1 Page 66 [And = *, Or = +]](/thumbs/90/102632904.jpg "Fundamental Counting Principle 2.1 Page 66 [And = *, Or = +]")
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