What is the largest and smallest possible gap in the stackup

What is the largest and smallest possible gap in the stack-up shown below? What are the two basic methods that can be used to develop part tolerances? What are the advantages and disadvantages of each? Why do we want to find Design errors and omissions in the early stages of design/prototype?

Solution

max gap=Cmax-(Amin+Bmin)=C+c-(A-a+B-b)

min gap=Cmin-(Amax+Bmax)=C-c-(A+a+B+b)

type are 1.progressive tolerancing

2.compound tolencing

adv.of 1 as tolerance given only one part of component so overall tolerance is less.

disadv.1 that not in so much in use so waste.

adv.of 2 here we can find tolerance on division ratio multiplications.

disadv.2calculation little bit tough.