i have to do the exercise. The check boxes have 5 items: item 1, item2,..., item 5. Each item have one value. These values is in the range from 500 to 600.
There are 5 variables x, y, z, p, q.
The connstant number is 1800
When 3 items are checked, such as item 1 item 2, item 3, the program will generate x,y,z. And
item 1 * x+ item2*y+item3*z=1800
The same if 4 and 5 items are checked.
If 1 or 2 items are checked, the program will alert error.
I cannot do this exercise. I am waiting for anyone's help.