Question

A = {1,4,5,7}
B = {1,7,9,12}
Find A ∩ B.

A) {1,4,5,7,9,12}
B) {1,7}
C) {1}
D) {7}

Answer 1

Answer:

B)

Step-by-step explanation:

A ∩ B means all the elements that appear in both of the groups

therefore:

1 nad 7 appear in both

the correct answer is B) 1 and 7

Answer 2

Answer:

pretty sure it A many people said B was wrong

Step-by-step explanation: