a.
, (Molecular formula: `C_(5)H_(10)`)
The following are the ring-chain isomers of (I)
1.
Total isomers (excluding stereoisomers)`=5`
b.
(Molecular formula: `C_(5)H_(8)`)
The following are the ring-chain isomers of (I)
Total isomers (excluding stereoisomers) `=12`.