(a)With the aid of a circuit diagram, show how four (4) flip-flops can be interconnected to reduce the normal 16 count sequence to 10 count sequence.

(b) Explain how the coqnter drawn in Ql(a) works
(c) A ripple counter which lIses four (4) flip-flops has a delay time (tpd) = 12ns. What can be the largest mod-counter that can be constructed from the flip-flops if it is operated at the frequency of 10MHz? "