counting Archives - rweber.net

Common themes in counting

Posted on 2014/05/152015/12/03 by Rebecca

Break into chunks and then add back together. Break into tasks and then multiply together. Do via the back door – find exactly when you don’t want and what’s left over is what you do want. Combining this with DeMorgan’s Laws can be powerful. Counting: find the total number of ways to accomplish a task […]

Counting and Probability Quiz

Posted on 2014/03/272015/12/03 by Rebecca

A professor is writing a multiple choice question. The question will show three graphs and ask which of them are connected, and the answer choices will be of the form “I and II only”, “none of them”, “all of them”, “III only”, etc. The professor uses a program to generate the answer selections, which guarantees […]