{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

2010 summer midterm

# 2010 summer midterm - University of Ottawa Department of...

This preview shows pages 1–3. Sign up to view the full content.

University of Ottawa Department of Mathematics and Statistics MAT 2377 3X: Probability and Statistics for Engineers Instructor: Aziz Khanchi Midterm Exam -Blue- Version 1- Solutions June 2010 Surname First Name Student # Instructions: You have 1 hour and 45 minutes to complete this exam. Record your answers in the table below. Only TI 30 calculators or equivalent models are permitted. Do not detach the staple. Write your student number at the top of each page in the space provided. There are 12 multiple choice questions. GOOD LUCK! Question Answer 1 2 3 4 5 6 7 8 9 10 11 12

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Student # MAT 2377 3X Midterm Exam -Blue- Version 1- Solutions Question 1. How many different 8 letter codes can be constructed using 2 a’s, 4 b’s and 2 c’s? A) 420 B) 40320 C) 16 D) 70 E) 840 Solution: 8! 2! 4! 2! = 420 . Question 2. In how many ways can 4 of 10 printers be chosen for a special company if a) order matters? b) order does not matter? A) a) 420, b) 5040 B) a) 210, b) 5040 C) a) 5040, b) 210 D) a) 5040, b) 200 E) a) 200, b) 10 Solution: a) Order matters, so it is a permutation: P 10 4 = 10! (10 - 4)! = 10! 6! = 5040 . b) This one is combination, C 10 4 = 10! 4!(10 - 4)! = 10! 4!6! = 210 .
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}