Question

What number should replace the question mark?
19
9
23
12
25
13
2
31​

Answer 1

Answer:

25 replace the question

Step-by-step explanation:

I hope helps

Answer 2

Step-by-step explanation:

19+17 = 1+9+1+7 =18 =1+8 =9

23+25 = 2+3+2+5 = 12

13+31 = 1 +3+1+3 = 8