The root locus of unity feedback system is shown in figure

The closed loop transfer function of the system is

The Bode magnitude plot of the transfer function $$G\left( s \right) = {{K\left( {1 + 0.5s} \right)\left( {1 + as} \right)} \over {s\left( {1 + {s \over 8}} \right)\left( {1 + bs} \right)\left( {1 + {s \over {36}}} \right)}}$$ is shown below: Note that $$-6$$ $$dB/octave=-20$$ $$dB/decade.$$ The value of $${a \over {bK}}$$ is _______.

Which of the following logic circuits is a realization of the function $$F$$ whose karnaugh map is shown in figure

A cascade of three identical modulo -$$5$$ counters has an over all modulus of