20 aqr questions

/in /by

https://docs.google.com/document/d/1zvSmQTIRlxWl9S…

for 8.1- questions 4 and 10

for 8.2- #1,2,5,6

8.3- 3.4.7.8

8.4 -2,4,5,6

8.5- 4,5,6

8.6- 4,5,6