[1:0] indicates 2 row and [7:0](which is right hand side of a) indicate 8 column.Now in each row’s element place there is 4 row(because [3:0]) and 8 column(because [7:0] left hand side).Visualize this you can understand easily.
[1:0] indicates 2 row and [7:0](which is right hand side of a) indicate 8 column.Now in each row’s element place there is 4 row(because [3:0]) and 8 column(because [7:0] left hand side).Visualize this you can understand easily.