Question

Ivan has a piece of lumber 104 inches long. He is sawing it into 12-inch lengths to make fence posts. He says he can get about 9 fence posts out of the board.

Answer 1

Assuming the question is what Ivan is saying possible the answer is no based on multiplication. He could get at most 8 12-inch fence posts. 

12 x 8 = 96 leaving him 8 more inches of board. 
12 x 9 = 108 meaning he would need 4 more inches of lumber to make his last fence post uniform with the rest.