Maths Got multiple past papers same year

[Shujaat Khan]

How is that possible and how do i know which one is the real one( the one we use in our past exams book) srsly i just went to jun10 p2 and saw there are 3 of them

 

[naumanahmad]

they are different variants

 

[Shujaat Khan]

I don't understand can you be more precise? the paper was made in different types? and how to know which is the real one ,....