Vaughn Climenhaga

Graduate Assistant
The Pennsylvania State University

Department of Mathematics

Math 35
A Survey of Mathematical Thought
Summer 2006

Assignment 4

Due Tuesday, July 18, at the beginning of class.

Chapter 2 exercises, p. 26-28, #2, 3, 5, 6, 21.  As always, be sure to show your work and justify your answers for full points - a correct answer with no justification shown will not receive full credit.  In particular, on #2, if a number is composite, indicate at least one set of its factors besides one and itself.

There are four points available for each question, so 20 is a perfect score on this assignment.


Recall the various divisibility tests:

A number is divisible by...

if...

2

Its last digit is even (0, 2, 4, 6, or 8)

3

The sum of its digits is a multiple of 3

4

Its last two digits are a multiple of 4

5

Its last digit is 0 or 5

6

It is divisible by both 2 and 3

8

Its last three digits are a multiple of 8

9

The sum of its digits is a multiple of 9

10

Its last digit is 0

Assignments

Assignment 1
Assignment 2
Assignment 3
Assignment 4
Assignment 5
Assignment 6
Assignment 7
Assignment 8
Assignment 9

Quiz Solutions

Quiz 1 (July 7)
Quiz 2 (July 21)
Quiz 3 (August 4)