Question

Solve ds if u r a genius!
1 2
3 4
?
Answer is not 5

Answer 1

1 + 2 = 3

1 2
3 4

3 + 4 = 7 

So ? = 7.

Answer 2

as shown in the question it says 
1 2
3 4
?
so the upwards no. are added and it gives 1+2=3 the 1 no. in second row.
so 3 and 4 would be added to get the no. in place of question mark.
3+4=7
so the answer is 7.