2
$\begingroup$

Here is a picture of a square. From the square, your task is to find out what number should replace the question mark and find a formula of it.

enter image description here

$\endgroup$
7
$\begingroup$

Answer :

enter image description here

Description :

1. $(7 + 2)^2 + 7^2 = 130$
2. $(4 + 3)^2 + 4^2 = 65$
3. $(8 + 5)^2 + 8^2 = 233$
4. $(9 + 6)^2 + 9^2 = 306$

$\endgroup$
  • $\begingroup$ Seems pretty arbitrary. Why isn't it (6+9)² + 6² = 261? Just because two sides square the bottom number doesn't mean the top and bottom should square the number to the right. $\endgroup$ – Octopus Dec 12 '18 at 17:52

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.