Solve the pattern puzzle below. Find the missing number to replace the question mark.
pls answer

Answer:
9 + 8 = 17
for instance, look at the numbers below 13, (7 and 4) notice how when you add those together you get the number that is across from it?
(7+4=11)
Answer:
I don't know how to explain but I think it is 17
Step-by-step explanation:
If you can see the opposite side of the number, so lets say 8 on the outer. In the middle is 7 and 9, 7 and 9 makes 16 and if you do the rest of the circle you will get 17.
Hopefully is correct!