Level 3Formulas That SpillPractice, 2 min

COUNTUNIQUE customers

The task

Ten orders, but how many different customers? In E2, count them with COUNTUNIQUE.

The data

The starting sheet. Cells outlined in green are where your formulas go.

ABCDE
1OrderCustomerAmountCustomers
25001Northwind$1,200
35002Cobalt Labs$640
45003Northwind$980
55004Brightline$2,150
65005Harbor & Co$410
75006Cobalt Labs$760
85007Northwind$1,330
95008Fieldstone$2,900
105009Brightline$515
115010Quillworks$870