Invisible and visible

1

in my program i have a question that has 7 answers and only 5 are the right answers.
when i click on the right anwser i get a tick next to it and the wrong answer gets a cross next to it.
I have put a next button in it so that it can go to the next question, but i have made it invisible until the right answer has been clicked on, but the problem is that the next button becomes visible when only one of the right anwers has been clicked i want the next button to appear when all the right answers has been clicked on.

can somebody help me with this please

2

you can do like this:
if(answer1==true)
dd+=1
else
dd=0
if(dd==1)
_root.answer2._visible=1
dd+=1
else
dd=1
and on and on

3

i dont understand any of this can you explain this to me