Playing with numbers and their divisibility properties can create some fun party tricks! Let’s see if I can read your mind…
You should now have a coloured animal from a country e.g. a brown rabbit from Argentina.
And now….for the great reveal….
Did you pick?
I’ll write it small so there’s no cheating!
Did you choose a grey elephant from Denmark?!
Of course, you may well have chosen a yellow jaguar from Djibouti, but I’m guessing most people didn’t. So how did I do it? Well, if you multiply a number by 10 and then subtract the original number, you’re really multiplying the number by 9. And the sum of the digits of any 1-digit number multiplied by 9 is…9. Take away 5 and you get 4, which converts to ‘D’. Most people then think of ‘Denmark’ giving you an animal beginning with ‘e’. And that’s how I did it. But it’s much more fun when you don’t know how!