At age six most children would probably be in primary one or three but certainly not writing their first mathematics exam.

Since six-year-olds are classified as little kids their favourite activities, for now, would be playing with toys to watching their favourite cartoon show.

Well, this is not the same for British-Nigerian minor,  Esther Okade who wrote her first Math GSCE exam, a British high school qualification, at just six, and got a C-grade.

A year later,  little Okade outdid herself and got the A-grade she wanted. Then in 2014, she scored a B-grade when she wrote the Math A-level exam.

In 2015, at the age of 10, Okade enrolled at Open University (a UK-based distance learning college) for a university maths course and began getting straight A’s as one of the youngest undergraduate students in the country. Three weeks after enrolment, she was already top of the class, receiving a perfect score on her first test, which she said was “easy.”

At the time of enrolment, Esther told CNN that; “I want to (finish the course) in two years. I actually wanted to start when I was seven. But my mum was like, “you’re too young, calm down.”

“So I’m going to do my PhD in financial maths when I’m 13. I want to have my own bank by the time I’m 15 because I like numbers and I like people and banking is a great way to help people.”

However, it seems little Okade inherited her maths genes from her mother,  Mrs Efe Okade, a mathematician, who homeschooled her at the age of three.

Another captivating fact about little Okade is that she loves maths, advanced math courses — theories, complex numbers the same way sports or music is for other kids.

She told CNN; “The course is so interesting. It has the type of maths of I love. It’s real maths — theories, complex numbers, all that type of stuff. It was super easy. My mum taught me in a nice way.”

“I want to (finish the course) in two years. Then I’m going to do my PhD in financial maths when I’m 13. I want to have my own bank by the time I’m 15 because I like numbers and I like people and banking is a great way to help people.”

Besides becoming one of the youngest college students in history, Esther is also writing a series of math workbooks for kids called Yummy Yummy Algebra.

“It starts at a beginner level — that’s volume one. But then there will be volume two, and volume three, and then volume four. But I’ve only written the first one. As long as you can add or subtract, you’ll be able to do it. I want to show other children they are special,” Esther explained.