Ten different fabrics are being displayed on racks along one wall of a store. The racks are next to each other in a straight line and are numbered consecu- tively from one to ten. On each rack is a single bolt of a different fabric. One fabric is green, two fabrics are different shades of brown, three fabrics are different shades of purple, and the remaining four fabrics are different shades of red.
Purple fabrics are on racks one and ten.
The two brown fabrics are on racks next to each other.
No red fabric is on a rack next to a brown fabric.
No purple fabric is on a rack next to the green fabric.
18. If a purple fabric is on rack two and red fabrics are on racks three and four, the green fabric must be on which of the following racks?
(A) Five (B) Six (C) Seven (D) Eight
(E) Nine
19. If the four red fabrics are on four consecutive racks, the green fabric and one of the brown fabrics could be on which of the following racks, respectively?
(A) Two and three (B) Three and four
(C) Four and five (D) Five and six
(E) Six and seven
20. Which of the following are colors of fabrics that CANNOT be on racks two, three, and four, respectively?
(A) Purple, red, green
(B) Purple, brown, brown
(C) Brown, brown, purple
(D) Red, red, green (E) Red, red, red
21. If a purple fabric is on rack three and a brown fabric is on rack four, the green fabric must be on which of the following racks?
(A) Two (B) Five (C) Six (D) Seven
(E) Nine
22. If the green fabric is on rack five and a brown fabric is on rack four, which of the following must be true?