Update 2. Working with Distinct Values and Sets.md

Author: ortizfram

Introduction to MongoDB in Python/2. Working with Distinct Values and Sets.md

@@ -144,3 +144,18 @@ print(ratio)
 
 ### # $regex flags  beginning,ending,escaping
 ![image](https://user-images.githubusercontent.com/51888893/204361075-06e60e1d-2979-41c9-82f7-82ac9a38b737.png)
+
+## Glenn, George, and others in the G.B. crew
+>  How many laureates in total have a first name beginning with "G" and a surname beginning with "S"?
+
+Evaluate the expression
+
+      db.laureates.count_documents({"firstname": Regex(____), "surname": Regex(____)})
+- [x] in the console, filling in the blanks appropriately.
+Possible Answers
+- [x] 9 laureates
+- [ ] 12 laureates
+- [ ] 50 laureates
+```py
+db.laureates.count_documents({"firstname": Regex("^G"), "surname": Regex("^S")})
+```