What is Abacus? What was its main purpose in early days?
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The abacus is one of many counting devices invented in ancient times to help count large numbers
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The abacus is one of many counting devices invented in ancient times to help count large numbers, but it is believed that the abacus was first used by the Babylonians as early as 2,400 B.C.1 The abacus was in use in Europe, China, and Russia, centuries before the adoption of the written Hindu-Arabic numeral system
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