This is a question of randomness so there really is no answer. I would guess 7 since that is the center page and you're more likely to open it up in or near the middle
The possibility to open to page seven is 75% percent. The possibility of opening to page 3 is about 25% Our human body will order us to open to the middle page without us realizing unless we are looking and know which random page we want. Due to the lack of information of the questions there is not much be said or to answer in any case.