Please read the below given text for solving the question Parmeshwar Rao working as landscape contractor.He is planting a row of seven kinds of trees .One tree has not arrived yet .We will label the trees A through F and number the evenly spaced holes 1 through 7 ,from left to right.The landscape architect has specified the following :
The distance from A to B must be same as that from C to D Trees E and F must be in adjacent holes ยท
The empty hole must not be the extreme right one