### Video Transcript

Find ๐ด intersection ๐ถ using the Venn diagram.

First, we need to know this little upside-down โ. This symbol โ the intersection symbol โ tells us that weโre looking for values found in both ๐ด and ๐ถ. The space here between ๐ด and ๐ต with the numbers 11 and six is the intersection of ๐ด and ๐ต. The numbers 11 and six are found in set ๐ด and in set ๐ต. The numbers 10 and eight are the intersection of ๐ต and ๐ถ. 10 and eight are found both in set ๐ต and in set ๐ถ. And weโre trying to determine are there any values that are found in set ๐ด and in set ๐ถ.

Letโs list out the values of set ๐ด. Set ๐ด is four, five, six, nine, 11. We can do the same thing for set ๐ถ โ set ๐ถ: zero, two, seven, eight, and 10. Now, is there any number thatโs found in both ๐ด and ๐ถ? ๐ด and ๐ถ donโt share any values. When two sets do not share any values, their intersection is called the empty set. We also might call this the null set.

The intersection of set ๐ด and set ๐ถ is the empty set.