This is a timed quiz. You will be given 15 seconds per question. Are you ready?
15
Which civilization is credited with the invention of the abacus?
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In a Japanese abacus (Soroban), how many beads are there in total?
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What is the typical number of beads on an abacus?
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What does each bead represent on a traditional abacus?
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How many rods are typically found in a standard Chinese abacus (Suanpan)?
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How is subtraction typically performed on an abacus?
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What is the primary function of an abacus?
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In an abacus, what does the bead closest to the bar represent?
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Quiz on Abacus
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