The number of isomers possible for the molecular formula `C_(2) FClBrI` is

The number of isomers possible for the molecular formula C_(2) FCIBrl is

The number of structure isomers possible from the molecular formula C_(3)H_(9)N is:

The total number of isomers possible for the formula C_3H_4 is

C_(5)H_(10)O is carbonyl compound. The number of structural isomers possible for this molecular formula are

The number of isomers for the compound with molecular formula C_(2)BrClFI is