Answer to Question #198873 in Discrete Mathematics for Vina

Question

Consider the following relation on set B = {a, b, {a}, {b}, {a, b}}: P = {(a, b), (b, {a, b}), ({a, b}, a), ({b}, a), (a, {a})}. 

Which one of the following alternatives represents the range of P (ran(P))? 1. {a, b, {a}, {a, b}}

2. {a, b, {a}, {b}, {a, b}}

3. {a, b, {b}, {a, b}}

4. {a, b, {a, b}} 

Answer 1

The range of a relation is the set of the second coordinates from the ordered pairs.

Answer: 1. {a, b, {a}, {a, b}}