Emeraldine Hilongo filmed her daughter at their home in Salt Lake City taking part in the fun quiz. She successful named more than 70 countries and capital cities by looking at their flags.

CRISTINA CARION RAMOS: The color is, like, (speaking Spanish). So, like, we're proud of these colors, you know, like, ... don't wave flags of other countries, especially the Mexican flag.

While the majority of us struggle to remember our parents’ phone numbers, Ayaan Shah can not only memorise numbers but also identify the flags of more than 100 countries. And he can do all of ...