Chapter 12.7, Problem 55MR

To determine

To find: The each union or intersection of the given sets.

Answer to Problem 55MR

The union of the given sets is $\left\{1,4,5,6,7,10\right\}$ .

Explanation of Solution

Given:

The given sets are:

  $\begin{array}{l}J=\left\{4,5,6,7\right\}\\ K=\left\{1,4,7,10\right\}\\ L=\left\{x/x\text{is an even whole number less than 12}\right\}\end{array}$

Calculation:

The set $J\cup K$ is calculated as:

  $\begin{array}{c}J\cup K=\left\{4,5,6,7\right\}\cup \left\{1,4,7,10\right\}\\ =\left\{1,4,5,6,7,10\right\}\end{array}$

Therefore the union of the given sets is $\left\{1,4,5,6,7,10\right\}$ .