2Here is how to solve this; and make sure you’ve got the right answer
When I found this task, I managed to solve it in about two minutes. Then, I went on to check the right answer and if I used right method to solve it. I got the right answer but to my surprise method they mentioned was way more complicated, than the one I used.
So here is the method to solve this and guess the right number;
To find the missing number in figure b, you have to look at figures a and c. When you do this you will realize, that if you add together numbers from same corners from figure a and c you get the number for same corner in figure b.
The missing number is; 10
Did you got it right?