Section 13.1

Counting

OBJECTIVE 1

Write down all the subsets of the set {1, 2, 3}

OBJECTIVE 2

In a survey of 200 college students in Chicago, 115 had been to Florida, 64 had been to New York, and 36 has been to both.

(a) How many students had been to Florida or New York?

(b) How many students had not been to either Florida or New York?

OBJECTIVE 3

How many three symbol code words can be formed if the first symbol is an upper case letter, the second symbol is a digit and the third symbol is a lower case letter?