chapter 1: 4 (ii, iv, ix, xiii), 5 (i, vi, vii), 9 (i, iv), 11 (iii, v, viii), 12 (i, iv, v), 13.
chapter 2: 1 (ii), 2 (i) [there is also a geometric picture behind this sum; can you discover it?], 5, 6, 12, 14.
chapter 3: 1, 3, 4, 5, 11(a,b,c), 12(a,b,c), 13, 23, 25, 27.
chapter 4: 1(i-v), 3(i-viii), 4(i,ii,iii), 6, 11, 13, 14, 17(ii,v).
chapter 5: 1, 2, 3(ii), 8(a), 13 (this is often known as the "Sandwich Lemma"), 15(i-iv).
chapter 5: 33(ii,iv), 34, 39(v,vii).
chapter 6: 2 (do it only for problem 4-17 parts (i) and (ii)), 3(a,c), 13, 14.
chapter 7: 1(i-iv), 2(i,ii), 3(ii), 5, 7, 10, 11.
chapter 8: 1(i-iv), 5.
chapter 9: 1, 5, 7.
chapter 10: 1, 2(ii,ix,xv), 4, 5, 12, 26.
chapter 11: 1(iii,vi), 3(ii), 9, 12, 14, 19, 28.