In this parenthesized statement in Ex. 7(a):

"(which contains elements ω not in infinitely-many F_ns, e.g. $\omega =\frac{1}{2}\in F_n$ , n odd)"

My question is, should that say $\omega =\frac{1}{2}\notin F_n$ , not $\omega =\frac{1}{2}\in F_n$, n odd.

Lower on page 11a, with F_n defined as in Ex. 7(b), it is said that ${\cap }_{k=n}^{\infty }{F}_n$ is

[0, ε), n=1
[0, 1-1/n), 1 < n < 32
[0, 31/32) n >= 32

My question is, would it be more correct to say

[0, ε), n=1
[0, 1-1/n), 1 < n < 32, n even
[0, 1-1/(n+1) ), 1 < n < 32, n odd
[0, 31/32) n >= 32

Also in Ex. 7(b), along the right margin there is the text "which contains elements ω in all but finitely-many F_ns, e.g. ω=30/32 ∉ F_n, n=1,2,4,6,...,32"

My question is, would it be more correct to say "ω=30/32 ∉ F_n, n=1,2,4,6,...,14", i.e. should the last number in the sequence given there be 14, not 32, since 30/32=15/16 and I assert 15/16∈F₁₄ and 15/16∉F₁₆.