#7. Priyanshi Somani
Priyanshi Somani is a mental calculator from India. She started mental calculation at the age of six. At the age of 11, she was the youngest participant of the Mental Calculation World Cup 2010 and won the overall title. With a hundred percent accuracy in all the fields, i.e. Addition, Multiplication, and Square Root, she became the only participant in the history to have achieved that. Her name has been added to Guinness Book of World Records. She has been named Indian Ambassador for the World Maths Day. She is considered to be a true genius and has been included in a Research Project in Stanford University.