I'm trying to solve puzzles to exercise my brain. I'm stuck on this test, I printed it from Mensa IQ Test, an app on Android store. Can someone help me?

Below is the test:

enter image description here

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    $\begingroup$ Ok, I will edit it $\endgroup$
    – Daniel
    Sep 21, 2021 at 2:21

2 Answers 2


The answer is


Going clockwise, for each section, sum of the top 2 number is equal to the bottom number of the next section.

e.g. 6 + 1 (the top 2 numbers) = 7 (the bottom number of the next section). In the next section, 2 + 3 = 5, etc.

  • $\begingroup$ Sniped me by 10 seconds :P $\endgroup$ Sep 21, 2021 at 2:40
  • $\begingroup$ @BeastlyGerbil, :) $\endgroup$
    – Eli
    Sep 21, 2021 at 2:45

The answer would be



The central number is the sum of the 2 outer numbers in the segment before (going clockwise)


7+? = 9, so the ? = 2


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