Read Sections 2.3, 2.5
p.44, parts (a), (d) and (e) of 1(ii) and 2(e), and # 5, 7, 10(a), 13, 23
p.31 # 1, 5, 6, 10, 17;  
Hint: for p. 45 # 13, first calculate floor(mk/n)+floor(m(n-k)/n).