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Date: 21-1-2021
576
Date: 3-10-2020
453
Date: 5-9-2020
567
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Also called "Ethiopian multiplication." To multiply two numbers and , write and in two columns. Under , write , where is the floor function, and under , write . Continue until . Then cross out any entries in the column which are opposite an even number in the column and add the column. The result is the desired product. For example, for
Russian multiplication works because it implements binary multiplication:
1. If , accumulate .
2. Right-shift one bit.
3. If , exit.
4. Left-shift one bit.
5. Loop.
REFERENCES:
Wells, D. The Penguin Dictionary of Curious and Interesting Numbers. Middlesex, England: Penguin Books, p. 44, 1986.
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5 علامات تحذيرية قد تدل على "مشكل خطير" في الكبد
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تستخدم لأول مرة... مستشفى الإمام زين العابدين (ع) التابع للعتبة الحسينية يعتمد تقنيات حديثة في تثبيت الكسور المعقدة
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