Bunuel wrote:
Thirty-six identical chairs must be arranged in rows with the same number of chairs in each row. Each row must contain at least 3 chairs, and there must be at least 3 rows. A row is parallel to the front of the room. How many different arrangements are possible?
(A) 2
(B) 4
(C) 5
(D) 6
(E) 10
(A) 2
(B) 4
(C) 5
(D) 6
(E) 10
r>=3, c>=3
(r,c) = (3,12), (4,9), (6,6), (9,4), (12,3)
C