The what shape is your mind test is pretty clever at first glance, but there’s a pretty basic trick at work here as far as I can tell. Naturally I feel very cocky about having figured out how it works so quickly, very superior, so I’m not going to share the secret with you. Or maybe I will.
Right. Although you’re asked to choose any two digit number, this is just a smokescreen to make you think that the chances of the crystal ball guessing your selection are much higher than they really are. In reality, once you’ve subtracted the two digits that form your number from the number itself there are only a few possible alternatives.
- 29 – 2 – 9 = 18
- 28 – 2 – 8 = 18
- 27 – 2 – 7 = 18