100 Doors : Runaway - Level 8

Level 8 - Maths Quiz.

Simply look at the numbers at the top and addition is your friend.

It starts already completed with a 2 and a 3 , because following the red line 2 + 1 = 3

So , place the numbers as such,

Left 2 , 7 , 5 , 10
Right 3, 11, 12 , 8