I was about 14 when the school took us to a 'maths is fun' exhibition, a contradiction in terms for me, I hated maths!
It's the only one I remembered from that trip, but it was fascinating! Have you tried it algebraically?
It still works, you get 1089 from xyz or abc, whatever you choose. It was that that made me remember it.
It's the only one I remembered from that trip, but it was fascinating! Have you tried it algebraically?
It still works, you get 1089 from xyz or abc, whatever you choose. It was that that made me remember it.