Answer:
D U E = (2, 4, 5, 6, 7)
Step-by-step explanation:
Given
D=(2,5,7),
E=( 2,4,5,6)
F= (1,3,4,5,7)
Required
Elements of D U E
In set notations, when U is used, it means union and it implies the totality of all sets without repetition.
So, given that D=(2,5,7) and E=( 2,4,5,6)
D U E = (2,5,7) U (2,4,5,6)
Merge Sets
D U E = (2,5,7, 2,4,5,6)
Remove Repetitions
D U E = (2,5,7,4,6)
Arrange in ascending order
D U E = (2, 4, 5, 6, 7)
Hence, the elements in set D U E are (2, 4, 5, 6, 7)
