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# Discrete Mathematics Classroom Activities PowerPoint PPT Presentation

Discrete Mathematics Classroom Activities. Richard Anderson University of Washington. Draw a picture of yourself. Inclusive or exclusive?. Coffee or tea comes with dinner A password must have at least three digits or be at least eight characters long.

Discrete Mathematics Classroom Activities

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## Discrete MathematicsClassroom Activities

Richard Anderson

University of Washington

IUCEE: Discrete Mathematics

### Inclusive or exclusive?

• Coffee or tea comes with dinner

• A password must have at least three digits or be at least eight characters long.

• To take discrete mathematics, you must have taken calculus or a course in computer science.

• You can pay using US Dollars or Indian Rupees.

e, I, I, either

### Rewrite in the form “if p then q” in English:

It is necessary to walk 8 miles to get to the top of Long’s Peak.

IUCEE: Discrete Mathematics

### Translate into logic Do not use uniqueness operator

Everyone has exactly one best friend

IUCEE: Discrete Mathematics

### Translate into logic

There is some restaurant that serves some food that everyone likes

IUCEE: Discrete Mathematics

A B

1

a

b

2

c

3

d

4

e

### How many zeros are there at the end of 100!

If a club has 25 members how many ways are there to choose the president, secretary, and treasurer, where no person can hold more than one office?

### Is R reflexive, symmetric, antisymmetric, transitive, if

• R = {(x,y) | xy ≥ 1}

• R = {(x,y) | x and y are both negative or both nonnegative}

• R = {(x,y) | x ≥ y2}

t

s