Pellereau claimed that his learning difficulties had enabled him to realise his strengths and weaknesses from a young age.
He also said that it had given him specific useful skills and talents when it came to product design.
> 'The Apprentice' complete coverage
> Tom Pellereau in profile
> Lord Sugar reveals Tom Pellereau nail file business plans
"I was in some ways very lucky because from a young age I was very bad at certain things, so that meant I was always going to do science, engineering and design," he said.
"I discovered I could do things better than other people. If I had an idea, I could visualise it in my brain and spin it around.
Pellereau secured a £250,000 business investment from Lord Sugar on tonight's show, which is expected to be spent on his curved nail file invention.
> Lord Sugar will keep in contact with Susan Ma after 'Apprentice'
> 'The Apprentice' Final: Highlights
> Tom Pellereau wins 'The Apprentice' 2011
Watch Lord Sugar deciding to hire Tom Pellereau in the final Apprentice boardroom below: