Paula and Peter Imafidon are nine-year-old twins. They live in England, and last year they became the youngest people to ever pass Cambridge University’s advanced mathematics exam.

A reporter asked them how hard they had to work in order to pass the exam. Paula said she treats math like a game, so it’s not really “work” to her.

Peter said the exam had some questions that “may seem difficult but are very easy once you get in the swing of it.” Of course, Peter is speaking as someone to whom math comes very easy—the questions are very tough, especially for kids their age.

The family’s other children, Anne-Marie, Christiana and Samantha are also exceptionally good at math.

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