Match List - $${\rm I}$$ (Milling problem) with List - $${\rm I}$$$${\rm I}$$ (Probable causes) and select the correct answer using the codes given below the lists:

Match List - $${\rm I}$$ (Cutting tools) with List - $${\rm I}$$$${\rm I}$$ (Features) and select the correct answer using the codes given below the lists:

$$NC$$ contouring is an example of

Consider the following characteristics:

$$1.$$ Single machine tool.
$$2.$$ Manual materials handling system
$$3.$$ Computer control.
$$4.$$ Random sequencing of part to machines.

Which of the above characteristics are associated with flexible manufacturing system?