Mind games 8-answers

24. Wacky numbers

The answer is:

7+2+5 = 143547

Why? The secret is to break the large number into groups of two digits. Let’s look at the first example:

5 + 3 + 2 = 15  10  22

15 is 5 multiplied by 3

10 is 5 multiplied by 2

22 is 15 plus 10 minus 3

The other examples show the same pattern. You could write it like this:

A+ B + C = D  E  F


D = A times B

E= A times C

F= D plus E minus B


Back to Mind Games


25. Rotating snakes

This is an example of the “peripheral drift” or “anomalous motion” illusion. An image with this kind of contrasting arrangement of light and dark colours (or blacks, whites and greys) creates an illusion of motion at the edges of your field of vision, with the “motion” seeming to travel along the shapes in a dark-to-light direction.

At Akiyoshi's illusion pages, you can see many striking illusions in a larger, high-definition format, which makes the effects stronger. Here is a small version of one – using a kind of anomalous motion that makes the image seem to “jiggle” – that Kitaoka designed to advertise the International Congress of Psychology (ICP), to be held in Japan in 2016:

Back to Mind Games 

We live in a world where facts and fiction get blurred
In times of uncertainty you need journalism you can trust. For only R75 per month, you have access to a world of in-depth analyses, investigative journalism, top opinions and a range of features. Journalism strengthens democracy. Invest in the future today.
Subscribe to News24