Sample Solution from
Mathematical Applications for the Management, Life, and Social Sciences
11th Edition
ISBN: 9781305108042
Chapter 0
Problem 1RE
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Textbook Problem

Is A B if A = { 1 , 2 , 5 , 7 }

and B = { x : x and is a positive integer, x 8 } ?

To determine

If AB

where A={ 1,2,5,7 } and B={ x:xand is a positive integer,x8 }.

Answer

Solution:

The answer is yes, AB.

Explanation

Given Information:

The given sets are A={ 1,2,5,7 }

and B={ x:xand is a positive integer,x8 }.

Explanation:

Let us convert the set B in another form.

B={ 1,2,3,4,5,6,7,8 }

We see that every element of A is an element of B.

So, { 1,2,5,7 }{ 1,2,3,4,5,6,7,8 }

Therefore, AB.

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