1 d. 

Very minor.. just thought it might be helpful with something like this:

... every set $A$ of 100 integers in the range 1 to 1000, we can select five different ordered pairs $(x,y)$ such at $x,y\in A$ with the same ... 

Reason is that the current sentence is selecting ordered pairs from sets of integers... Seems to me that the selection is 'implied'. 


1 e.   

Instead of H_n, should we use X_n, so as to to be confused with the Harmonic number?



6. 
the styles for 'MATH' and 'EECS'. maybe \mathrm  ?


12.
G_1,..,G_n,...    <--- students might wonder whether $n$ is fixed..

How about just G_1, G_2, G_3, ... 
?

13.
figure ??.

total points != 20 ...


14.
Is it necessary to say that a cow keeps its temperature even if it dies?


15.
should we display the formulas as equations? such as 

c^2-c/p+q/p = 0 


a_0 ___  ? <- question mark :P