7
6
5
8
9
10
12
16
?
0
4
5
2
21
18
17

Answer:
what the heck is that bro aaaaaaa 2000IQ
Step-by-step explanation:
Step-by-step explanation:
the answer is 10
because
when 5+2 equals to 7( at opposite of 5 and 2)
when 8+9 equals to 17 ( at opposite of 8 and 9)
when 12+4 equals to 16( at opposite of 12 and 4)
(it is proven)
so when 10+0 equals to 10