How many different stereoisomers exist for the compound below?

How many different stereoisomers exist for 1 -chloro- 2 ( 3 -chlorocyclobutyl) ethane?

The maximum number of optically active stereoisomers that could exist for the compound below

How many different stereoisomers are possible for the following compound ? ClHC=HC-underset(Cl)underset(|)overset(H)overset(|)(C)-CH=CHCl

How many geometrical isomers exist for the molecule shown below?

How many stereoisomers are possible in this compound ?

How many stereoisomers are possible in this compound ?

How many stereoisomers are possible for the following compound ?