Answer to Question #315831 in Discrete Mathematics for WENZ

Question

Determine whether each of these pairs of sets are equal.

1. {1,3,3,3,5,5,5,5,5}, {5,3,1}

2. {a,c,t}, {c,a,t}, {t,a,c}

3. {a,c,t}, {a,c,t,o,r}

Answer 1

1) {1,3,3,3,5,5,5,5,5} after deleting repeated elements transforms into {1,3,5}={5,3,1} - equal

2) All of the sets has identical elements, so they are equal

3) Elemets {o}, {r} are inside second set but not inside the first one. Not equal