Paula got a B grade while Peter achieved a C
Eight-year-old twins from Berkshire have passed an A-level advanced mathematics exam.
Peter and Paula Imafidon, who attend Calcot Junior School in Reading, took the University of Cambridge's advanced mathematics paper.
Peter, who got a C, said he wanted to become a "successful prime minister" and Paula, who achieved a B, said she wanted to be a maths teacher.
They have three older sisters who also passed maths exams at an early age.
The twins sat the exam after taking part in an Excellence in Education programme.
The paper is more advanced than a basic maths A-level exam and is based on mathematical reasoning.
A spokeswoman for Excellence in Education said: "You wouldn't pass it by simply bringing in a calculator."
Chris Imafidon, the twins' father, said: "We are extremely delighted with the continued progress of the twins' intellectual journey and development.
"This result made us realise that every child is capable of any achievement or feat.
"All children are born bright provided they are given an enabling environment.
"If we allow any child to express their passion for a subject, there is no height they cannot reach or A-level they can't exceed."
The twins have also helped to write a book with their school classmates on how to succeed academically, with the proceeds going to their school and charities.