Unlike the picture, there are no decimals. The rightmost column is the unit column.
Hi, the abacus is Chinese invention, not japanese !!!
i never made any claim to who invented the abacus. i'm just clarifying that this problem pertains to the japanese soroban, which is specifically designed for base-10 arithmetic.
Link provided to webhome.idirect.com appears to be down. Here is another link:
i dont get it..how does it work?
given 3 sides, find area of this triangle
sum of non-primes
Dimensions of a rectangle
Is this triangle right-angled?
Guess the Coefficients!
ASCII Birthday Cake
Set a Soroban Abacus
Reverse the Words (not letters) of a String
Generalized N-Cards Problem
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