It's 16
Because you take a number from the left side.
Then from the left side you multiply it by 4 and then you get the middle number
the substract 4 from the middle and you get the last number on the right.
Example with top row
3*4= 12
12-4=8
Now with bottom one
5*4=20
20-4=16
Therefore the answer is 16
RE: Daily quiz #009 - Don't be confused