Question

Given the set A=(2,5) and B=(5,7,9) find the following: AnB

a
5
b
2.9
n
2,5,7,9
7,9
d

Answer 1

Greetings from Brasil....

The intersection of two sets is given by the elements that are common - present in both - to the sets.

A = {2; 5}

B = {5; 7; 9}

Element in both sets = 5.... So

A ∩ B = {5}