Chapter 4.3, Problem 24E

What are the greatest common divisors of these pairs of integer?

a) ${\text{2}}^{\text{2}}.{\text{3}}^{\text{3}}.{\text{5}}^{\text{5}},{\text{2}}^{\text{5}}.{\text{3}}^{\text{3}}\text{'}{\text{5}}^{\text{2}}$

b) ${\text{2}}^{.}{\text{3}}^{.}\text{5}-{\text{7}}^{.}\text{11}\cdot \text{13},{\text{2}}^{\text{11 }.}{\text{3}}^{\text{9}.}{\text{11}}^{.}{\text{17}}^{\text{14}}$

c) $\text{17},{\text{17}}^{\text{17}}$

d) ${\text{2}}^{\text{2}}{}^{.}\text{7},{\text{5}}^{\text{3}.}\text{13}$

e) $0,\text{5}$

f) 2.3.5.7,^.2.3.5.7