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  2. Chisanbop - Wikipedia

    en.wikipedia.org/wiki/Chisanbop

    36 represented in chisanbop, where four fingers and a thumb are touching the table and the rest of the digits are raised. The three fingers on the left hand represent 10+10+10 = 30; the thumb and one finger on the right hand represent 5+1=6. Counting from 1 to 20 in Chisanbop. Each finger has a value of one, while the thumb has a value of five.

  3. Polydactyly - Wikipedia

    en.wikipedia.org/wiki/Polydactyly

    Varalakshmi V, a girl from Bangalore with eight fingers on each hand and about four to five extra toes on each foot. [ 72 ] Volcacius Sedigitus , a Roman poet of the 1st century, probably received his epithet, signifying "Sixfinger", because he was born with six fingers on each hand, according to Pliny .

  4. Finger-counting - Wikipedia

    en.wikipedia.org/wiki/Finger-counting

    In senary finger counting (base 6), one hand represents the units (0 to 5) and the other hand represents multiples of 6. It counts up to 55 senary (35 decimal). Two related representations can be expressed: wholes and sixths (counts up to 5.5 by sixths), sixths and thirty-sixths (counts up to 0.55 by thirty-sixths). For example, "12" (left 1 ...

  5. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    For example: set the monkey's feet to 4 and 9, and get the product—36—in its hands. Many common methods for multiplying numbers using pencil and paper require a multiplication table of memorized or consulted products of small numbers (typically any two numbers from 0 to 9).

  6. Dactyly - Wikipedia

    en.wikipedia.org/wiki/Dactyly

    Human hand anatomy (pentadactyl) In biology, dactyly is the arrangement of digits (fingers and toes) on the hands, feet, or sometimes wings of a tetrapod animal. The term is derived from the Greek word δακτυλος (dáktylos) meaning "finger." Sometimes the suffix "-dactylia" is used. The derived adjectives end with "-dactyl" or "-dactylous."

  7. How long does COVID live on surfaces? Experts answer your ...

    www.aol.com/long-does-covid-live-surfaces...

    As health officials brace for a potential uptick in COVID cases this fall, we asked the experts to answer your COVID FAQs.

  8. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    Since 9 = 10 − 1, to multiply a number by nine, multiply it by 10 and then subtract the original number from the result. For example, 9 × 27 = 270 − 27 = 243. This method can be adjusted to multiply by eight instead of nine, by doubling the number being subtracted; 8 × 27 = 270 − (2×27) = 270 − 54 = 216.

  9. Multiplication sign - Wikipedia

    en.wikipedia.org/wiki/Multiplication_sign

    Geometric dimension of an object, such as noting that a room is 10 feet × 12 feet in area, where it is usually read as "by" (e.g., "10 feet by 12 feet") Screen resolution in pixels, such as 1920 pixels across × 1080 pixels down. Read as "by". Dimensions of a matrix, where it is usually read as "by"