A landscape contractor is planting a row of seven kinds of trees

[m.gayatri]

A landscape contractor 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
The empty hole must not be the extreme right one

1. Which of the following placements conforms to the rules ?
A)B,empty ,A,E,F,D,C
B)B,C,empty, D,A,F,E
C)D,E,B,C,F,empty,A
D)D,F,E,A,C.empty,B
E)Empty,D,C,F,E,A,B

2. If F is the second hole ,what else must be true ?
A) A is in 3 B) B is in 4 C) Cis in 5 D) Dis in 7 E) E is in 1

3. If A is in 1 and C is in 3,which hole is empty ?
A) 2 B) 4 C) 5 D) 6 E) 7

4. If A is in 3 and Bis in 4 what could be true ?
A) C is in 6 B) C is in 5 C) D is in 6 D) F is in 1 E) 6 is empty

5. Which of the following could be an empty hole ?
A) 7 B) 2 C) 3 D) 4 E) 6