Total number of optical active isomers of the following compounds are respectively `:`

Draw optically active stereo isomer of the following compound.

Number of optically active isomer is/are :

Number of optically active isomer is/are :

Total number of optical active stereoisomers of the following compound is : CH_(3)-CH=CH-CHOH-CH=CH-CH_(3)

The number of optically active isomers of the compound C_(7)H_(16) are :

The number of optical active isomers of 2,4 dibromobutane are

The total number of geometrical isomers possible in the following compound is