You are planning to email to two lists. the first list has 1,200 names. the second list has 900 names. there are 150 names that appear on both lists. how many total unique names do you have?
1,200 - 150 = 1,050
900 - 150 = 750
1,050 + 750 = 1,800
There are 1,800 total unique names.
Answer: There are 1800 unique names from both the lists.
Explanation:
Since we have given that
there are two lists :
In First list, number of names = 1200
In Second list, number of names = 900
According to question , we have also given that
there are 150 names that appear on both lists,
So,
Number of unique names in the first list is given by
\(1200-150=1050\)
Number of unique names in the second list is given by
\(900-150=750\)
Therefore, total number of unique names is given by
\(1050+750=1800\)
Hence, there are 1800 unique names from both the lists.