Question

1)Set A ={ 1, 3, 5, 7, 9} and Set B = x is a positive odd integer less than 10. What is A intersection B?

2)Set A = {yellow, green, pink, blue}, Set B = {yellow, purple, green, red}, Set C = {yellow, green, orange}.
Find A intersection B intersection C. (Elements common between all three sets)

Answer 1

see below

Explanation:

1)

set A is already a set of positive odd numbers below 10 so the intersection of the sets is simply {1,3,5,7,9}

2)

this ask, what do sets A,B, and C have in common?

every set has yellow and green so the intersection is

{yellow, green}