duke-of-bytes hello awesome people i am looking to solve this but keeps failing - the answer is 8 according to the book but i couldnt find the relation https://imgur.com/ypvVmuY https://imgur.com/yrRwboP
MSD First off, the number on the right side in the top right square looks like a 6 but should be a 5 (which made finding an answer even harder). In each square subtract the sum of the horizontally opposed numbers from the product of the vertically opposed numbers, you get 40. (5x13) - (5+20) = (4x12) - (3+5) = (4x16) - (4+20) = (5x11) - (7+8) I ended up using google after giving up ...