Inaudi, the lightning calculator
Wall Art and Photo Gifts from Mary Evans Picture Library
Inaudi, the lightning calculator
Inaudi, the lightning calculator, performing at the Hippodrome, able to do mentally any sum given by the audience up to twelve figures in addition, subtraction and multiplication. Date: 1903
Media ID 14408925
© Illustrated London News Ltd/Mary Evans
Addition Arithmetic Blackboard Brain Calculating Calculator Clever Dec16 Genius Hippodrome Intelligent Lightning Mathematical Mathematics Maths Mental Multiplication Sums Thinking
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