Question

Find the missing number.

Answer 1

234
.
The sum of the lower 2 numbers = the sum of the top 2 numbers + the number in the square.

Answer 2

234
.
The sum of the lower 2 numbers = the sum of the top 2 numbers + the number in the square.
215+18 = 167+52+14
198 +28 = 116+30+80
314+92 = 134+x+38
so,
406 = 172 +x
so, x=234 is the answer.