Part C: Communication (8 marks) 15 10. How many terms are in the expansion of 3x2 - (1 mark) 1 1. Express in the form (a + b)" for the following expansion: (2 marks) 12. Find the first 3 terms in the expansion of (3x + x2 ) (3 marks) 13. Find to in the expansion (x -2)" without expanding the entire binomial. (2 marks)Unit 3 Test: Introduction to Probability 13 12 11 10 KU Thinking Communication Application Part A: Knowledge and Understanding (13 marks) identify the choice that best completes the statement or answers the question. Put all answers in the box on page 3. 1. At the cafeteria, Jeff has a choice of three soups, four types of sandwich, and two desserts. In how many ways can Jeff choose his lunch if he has soup, a sandwich, and dessert? a. 9 b. 18 c. 24 d. 12 Which word has the fewest permutations of its letters? a. fore b. sense c. batts d. force In how many ways can 3 nurses and 4 doctors be arranged in a row if no two people of the same occupation can sit together? a. 24 b. 72 c. 144 d. 200 There are 8 students on the curling team and 12 students on the badminton team. What is the total number of students on the two teams if three students are on both teams? a. 20 b. 17 c. 15 d. 14 11C5 is equal to 11! a. l5! 1|! b. (ll)l! c. 1116