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- The Braille system, devised in 1821 by Louis Braille, is a method of reading and writing used by blind people.
Question 1:
The Braille system, devised in 1821 by Louis Braille, is a method of reading and writing used by blind people. In the Braille alphabet each letter is represented by the so-called Braille cell, which is a grid of up to how many raised dots?
A. 6
B. 12
C. 7
D. 9
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