How many columns of beads there are on a standard abacus?
answer - 13
Found in book - 10,000 Answers
Showing posts with label abacus. Show all posts
Showing posts with label abacus. Show all posts
Wednesday, January 5, 2011
Fun Fact of the Day - Trivia - Abacus
How many columns of beads there are on a standard abacus?
answer - 13
Found in book - 10,000 Answers
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