Question 324930
{{{0 < a < 1 < b}}}
Multiply all terms by {{{b}}} since {{{b>1}}}
{{{0 < ab < b < b^2}}}
Since {{{b>1}}}, then {{{ab>a}}} so then,
{{{0 < a < ab < b < b^2}}}
Given that, 
F. {{{0 < ab < a}}}, Never true
G. {{{0 < ab < 1}}}, Not always true
H. {{{a < ab < 1}}}, Not always true
J. {{{a < ab < b}}}, True
K. {{{b < ab}}}, Never true