Question

1+1????? x
2+2
3+3 window plus window ????

Answer 1

1+1= 2
2+2= 4
3+3= 6
As you can tell from your answers it's is increasing by 2 each time.
HOPE THIS HELPS! ^_^

Answer 2

The answer is 2,4,6 and window plus window doesn't make sense