What products are formed when m-xylene is treated with ${\text{Br}}_2$ in the presence of ${\text{FeBr}}_3$?

In m-xylene (1,3-dimethylbenzene), both methyl groups are $o/p$ directing.Positions 2, 4, and 6 are activated.Position 4 (and its equivalent 6) is less sterically hindered than position 2 (which is between two methyl groups).Therefore, 4-bromo-1,3-dimethylbenzene is the major product.