2017 NS 22

\(\text{You need to try a little harder on these.}\\ \text{There are 9 slots to be filled. There are 11 integers that could be used}.\\ \text{There are }\dbinom{11}{9} \text{ ways to choose the set of integers used}\\ \text{It's clear the order these have to be placed. Except that either arrangement }\\ \text{in the vertical blocks can be used. That gives us an additional factor of 4}\\ n = \dbinom{11}{9}\cdot 4 = 220\)