i. (n+ 2)(n+ 1)n! can be simplified to?

ii. Twenty different books are available at a yard sale, and Shu Xi intends to buy at least three

books. In how many ways could this be done?

ii. What is the probability of randomly selecting a blue sock from an unorganized sock drawer if the odds against picking a blue sock are 3:7?

iv. Which of the following pairs of events is not mutually exclusive?

a)a pair of dice shows doubles; the sum on a pair of dice is odd

b)a textbook is for grade 12 Mathematics; a textbook is for grade 12 History

c)a person was born in Canada; a person was born in Europe

d)a person has blue eyes; a person is left-handed

5.When developing an exam schedule, the following data were collected from the grade 12 students:

90 students study Advanced Functions

42 students study Math of Data Management

53 students study Calculus & Vectors

23 students study Advanced Functions and Math of Data Management

25 students study Calculus & Vectors and Advanced Functions

15 student study Math of Data Management and Calculus & Vectors

8 students study all three grade 12 math courses

79 students did not study any of these grade 12 math courses

How many students were included in the collection?

Question 5 options:

a)335

b)209

c)264

d)185

7.Jake's mark breakdown was Knowledge & Understanding 80%, Application 75%, Communication 67%, Thinking 72%. What was his final mark?

a)73.5

b)72

c)74.7

d)75.8

8.What is the probability of randomly selectingeithera clubora non-face card from a standard deck of cards?

a)10/13

b)5/25

c)43/52

d)1/4

9.Which formula can be used to calculate the expectation for a geometric distribution?

a) q/p

b) np

c) nq

d) p/q

10.Which word has the fewest permutations of its letters?

a) fierce

b) census

c) faster

d) follow

Question 5 {Mandatory} {1 point] The scatter plot shown includes an outlier in the upper left corner of the graph. The line of best fit is shown. How would the line of best fit be affected if the outlier were removed? 0 a} The slope would increase. 0 W The slope would decrease and remain positive. 0 C] The slope would decrease and become negative. 0 d} The slope would he unchanged