Question 1123204
Start with 5W 2M
6W3M
7W4M
8W5M
9W6M
x=women, y=men
7<=x+y<=15, x=y+3
7<=2y+3<=15 
4<=2y<=12
2<=y<=6
therefore, the women (y+3) can be 5,6,7,8,9 members.