Math245Quiz5Sum00

# Math245Quiz5Sum00 - Math 245 Name QUIZ 5 SECTIONS 4.1-4.3...

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Math 245 Name: ________________________ QUIZ 5 SECTIONS 4.1-4.3: COUNTING Show all work where appropriate! Write your name on all of your worksheets. For each problem, clearly indicate the problem number and/or letter, relevant work, and your answer. Note 1: Unless otherwise specified, "or" means "inclusive or". Note 2: You do not have to evaluate C ( n , r ), or n r . You may leave those expressions in your answers. 1) A bag contains 10 red balls, 10 blue balls, and 10 green balls. You will select balls at random from the bag without looking inside the bag. (10 points; 5 points each) a) What is the minimum number of balls that you can pull out such that you can be sure that at least five of the selected balls will be of the same color? b) What is the minimum number of balls that you can pull out such that you can be sure that at least five of the selected balls will be green? 2) How many positive integers less than 5000 are divisible by 5 but not by

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## This note was uploaded on 09/08/2011 for the course MATH 245 taught by Professor Staff during the Spring '11 term at Mesa CC.

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Math245Quiz5Sum00 - Math 245 Name QUIZ 5 SECTIONS 4.1-4.3...

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