Springs in series and parallel

If k_(s) and k_(p) respectively are effective spring constant in series and parallel combination of springs as shown in figure, find (k_(s))/(k_(p)) .

Some springs are combined in series and parallel arrangement as shown in the figure and a mass m is suspended from them. The ratio of their frequencies will be

Some springs are combined in series and parallel arrangement as shown in the figure and a mass m is suspended from them. The ratio of their frequencies will be :-

Two identical springs are connected in series and parallel as shown in the figure . If f_s and f_p are frequencies of arrangements, what is f_s/f_p ?

Two identical springs of spring constant k each are connected in series and parallel as shown in figure. A mass M is suspended from them. The ratio of their frequencies of vertical oscillation will be

Two identical spring of constant K are connected in series and parallel as shown in figure. A mass mis suspended from them. The ratio of their frequencies of vertical oscillations will be