Which pairs will the observation be the same?

Question

Bromine in inert solvent is added separately to hexane, hexene, benzene, methylbenzene in the presence of sunlight. In which of the following pairs will the observation be the same?

Answer 1

Please get your question more clearly!!!  

Answer 2

errr... where are the following pairs?

Bromine will react by addition reaction with hexene. In hexane and methylbenzene there will be a free radical substitution reaction in the presence of light. With benzene under these conditions there will probably not be a reaction