How to solve math logic puzzle? Thank you.

This math logic puzzle is really difficult. We several people tried very hard. But it seems always controversial.Please find the puzzle below.

When companies want to test out new products, many of them call upon the experienced staff of Strategic Focus. This excellent organization runs focus groups that give companies feedbak on their projected innovations. Last Thursday was a busy night at Strategic Focus, when no fewer than four focus groups were being conducted. Each group met in a different room (letter A through D), and each group was testing a different type of new product (Dressing, Magazine, facial soap, video). Each group was conducted by a different staff member (Brent, Farley, Millicent, Wima). From the information provided, can you determine the staff member who conducted the group testing each product and the room in which each group met, as well as the number of people in each group?

1.The group with the most participants did not meet room A.

2.Farley's group had the same number of participants as another group; this other group (which met in a room with a letter alphabetically consecutive to that of Farley's group) wasn't the one testing a new kind of salad dressing.

3.The focus group testing a new magazine met in a room whose letter comes alphabetically before that of a room in which a 12-member group met, which comes alphabetically before that of the room where Farley's group met.

4.Wilma supervised a group with half as many participants as Brent's group (which met in room C).

5.The group testing a new video game and one in room B were Wilma's group and the only group with 14 participants, in some order.

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• 回複：How to solve math logic puzzle? Thank you. -|-)- ♀ (894 bytes) () 11/25/2010 postreply 16:23:20

• This is the answer -北京大老貓- ♀ (5913 bytes) () 11/25/2010 postreply 20:40:10

• agree -calligraphy- ♂ (0 bytes) () 12/01/2010 postreply 07:19:19

• What does condition 5 mean? -aisanguo- ♀ (0 bytes) () 11/25/2010 postreply 21:13:51