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## Homework Statement

Let A = {1,3,5,6}, B = {3,5} and C = {a,b,c}

Compute

a. A - B

b. B x C (cartesian product)

c. AB

d. A(B-A)

## Homework Equations

Table of set computation in text

## The Attempt at a Solution

a. = {1,6}

b. = {(1,3,a),(1,3,b),(1,3,c),(1,5,a),(1,5,b),(1,5,c),(3,3,a),(3,3,b),(3,3,c),(3,5,a),(3,5,b),(3,5,c),

(5,3,a),(5,3,b),(5,3,c),(5,5,a),(5,5,b),(5,5,c),(6,3,a),(6,3,b),(6,3,c),(6,5,a),(6,5,b),(6,5,c)}

c. = {3,5}

d. = null set

First time working with sets, any support helps. Thanks!