The total number of optical isomers possible for this compound are?

Me (CH=CH-CH=C=CH-CH=CH_(2) Total number of geometrical isomers possible for above compound are:

What is the total number of structural isomers possible for a compound with the molecular formula C_(5)H_(10) ?

The total number of acyclic Structural isomers possible for compound with molecular C_(4)H_(10)O is

The total number of geometrical isomers are possible for the following compound is

Maximum number of optical isomers possible for fructose

Find the number of optical isomers for this sizes compound.