1. Simplify 5! 2. Simplify P(4,3) 3. Simplify C(8,5) ? 6. Simplify 5

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1 Algebra 2 Trig H 11.4 and 11.5 Review Complete the following without a calculator: 1. Simplify 5! 2. Simplify P(4,3) 3. Simplify C(8,5) 4. Solve 12C5 12 C 5. Simplify? nc 2? 6. Simplify 5 P 2 7. Simplify x 1 P 8. Simplify C 9. Simplify x 1 x 0 x 2Cx How many different words can be formed using all of the letters in PROBABILITY? 11. If six people compete for a medal at the Olympics, how many ways can three people be chosen to win the gold, silver and bronze medals? 12. Four students are selected from a home economics class of 16 students to form a committee to advise the cafeteria director about food. How many different committees can be formed? 13. There are four candidates for homecoming queen and three candidates for king. How many king-queen pairs are possible? 14. How many 9-digit social security numbers are there? The only restriction is that a number cannot begin with How many different license plates begin with two digits, followed by two letters and then three digits if no letter or digits repeat?

2 Baskin Robbins has 31 flavors, 6 of them being fat free. Of the fat free variety, 3 have cookies. Of the non-fat free variety, 17 have cookies. Baskin Robbins also offers the following toppings: hot fudge, caramel, butterscotch, sprinkles, chocolate chips, and cherries. 16. How many ways are there to arrange the toppings in the display case? 17. How many ways can a person choose 2 toppings for their sundae? 18. What is the probability of choosing ice cream that is fat free or has cookies? 19. How many ways are there to arrange the letters in VANILLA? 20. Mrs. Green goes to Baskin Robbins three days in a row and gets one scoop of ice cream each day. How many different ways could she have had ordered ice cream? 21. Baskin Robbins is having a favorite ice cream competition, where customers get to vote on their favorite ice cream. How many ways can a first, second, and third place favorite be named? 22. How many ways can 8 people sit around a circular table? 23. Using the letters in the word COMPUTER: a. In how many ways could you pick a vowel and a consonant? b. In how many ways could you pick a consonant or a vowel? c. In how many ways could you select a vowel and then another vowel? d. How many different four-letter words could you make using no letter more than once? e. How many different four-letter words could you make with repetition of the letters allowed?

3 One card is chosen from a standard deck of cards. Find the probability of each situation occurring. 24. P(red or King) 25. P(the 2 of spades) 26. P(heart or Queen) 27. P(at most a 10 of any suit) Two cards are chosen from the standard deck of cards. Find the probability of each situation occurring. 28. P(club, then spade), replacement 29. P(club, then club), no replacement 30. P(Ace, then King), no replacement 31. P(King, then Joker), replacement A five card hand it dealt from a standard deck of cards. Find the probabilities below and leave your answer as an expression. 32. P(3 clubs, 2 spades) 33. P(exactly 3 clubs) 34. P(no spades) 35. P(all diamonds) 36. P(all cards of the same suit) 37. P(exactly 2 Kings and exactly 2 Aces)

4 38. You throw a pair of dice one red, the other black a. P(the sum is at least three) b. P(the sum is between three and eleven, inclusive) c. (the red die is a three or the black die is a four) 39. There are 3 red pens and 5 black pens on the desk. If 4 are selected at random, what is the probability that: a. exactly 1 pen is red b. all of the pens are black 40. An ordinary deck of playing cards is used to play a game in which you are dealt a 7 card hand. Find the probability that: a. you have exactly three red cards and four black cards b. you have the ace of hearts c. you have all spades 41. On your spring break camping trip the probability of you breaking your arm is 0.07 and the probability of spraining your ankle is What is the probability that you will: a. not get injured at all? b. Get at least one injury?

5 43. A short multiple choice test has 5 questions. Each question has 4 choices, exactly one of which is right. Assume that you are not experienced in the subject, so you guess randomly to choose the answers. a. What is the probability of guessing any one answer right? Wrong? b. Calculate the probability of guessing 0,1,2,3,4, or 5 answers correct. c. You will pass the test is you get 4 answers right. What is the probability of passing? 44. A certain part inside of a factory machine has a probability of 0.95 that it will work. In the entire factory there are 100 of these parts. What is the probability that all of the parts will work? 46. The varsity dodgeball team of 4 boys and 8 girls makes it to sectionals. Their coach, Mrs. Beam, will take 7 of them to sectionals. What is the probability that Mrs. Beam selects a. 2 boys and 5 girls? b. all girls? c. all boys? d. Liam, their star player 47. Two dice are rolled, a blue one and a green one. a. P(blue one has a 4 and the green one has a 3) b. P(4 and a 3) c. P(odd number on the blue and a multiple of 3 for the green)

6 48. Tiffany s has 514 necklaces and 120 pieces containing pearls. 75 of the pieces are pearl necklaces. How many of the pieces are necklaces or contain peals? 49. Ms. S challenges her class to guess the code word she is thinking of. The winner gets a full month without homework. She tells the class that the code has one letter and three digits. Now be careful, she didn t say where the letter is. a. How many codes are there possible? b. She hints that the code has no digit that repeats. Now how many codes possible? c. She forgot to tell you, she does not like the unlucky number seven so I know she would not put a seven in her code. Now how many codes are possible? d. She just remembered, she does not like the letters B, D, E, and T so none of them are in her code word with all different digits and no number seven! So how many code words are possible? e. Now that you know all the things about her code word, what is the probability you guessed it? 50. The Cubs and the White Sox are finally playing each other in the World Series. It is estimated that the White Sox have about a 65% chance of winning any one game. To win the world series, a team must win 4 out of 7 games. What is the probability that the White Sox will win in exactly 6 games?

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