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  2. Multiply perfect number - Wikipedia

    en.wikipedia.org/wiki/Multiply_perfect_number

    It can be proven that: . For a given prime number p, if n is p-perfect and p does not divide n, then pn is (p + 1)-perfect.This implies that an integer n is a 3-perfect number divisible by 2 but not by 4, if and only if n/2 is an odd perfect number, of which none are known.

  3. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    Dividing 272 and 8, starting with the hundreds digit, 2 is not divisible by 8. Add 20 and 7 to get 27. The largest number that the divisor of 8 can be multiplied by without exceeding 27 is 3, so it is written under the tens column. Subtracting 24 (the product of 3 and 8) from 27 gives 3 as the remainder.

  4. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    Multiplication table from 1 to 10 drawn to scale with the upper-right half labeled with prime factorisations. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system.

  5. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Area of a cloth 4.5m × 2.5m = 11.25m 2; 4 ⁠ 1 / 2 ⁠ × 2 ⁠ 1 / 2 ⁠ = 11 ⁠ 1 / 4 ⁠ Multiplication (often denoted by the cross symbol × , by the mid-line dot operator ⋅ , by juxtaposition, or, on computers, by an asterisk * ) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition ...

  6. List of Schoolhouse Rock! episodes - Wikipedia

    en.wikipedia.org/wiki/List_of_Schoolhouse_Rock...

    A Minnesota Fats-like feline pool hustler plays a game of nine-ball, with a mouse as his usual target, in the process showing multiplication by 9. It also looks at the phenomenon that any multiple of nine will have its digits add up to nine (e.g. 3 x 9 = 27, and 2 + 7 = 9).

  7. More than $12 million worth of jewelry and Hermes bags ... - AOL

    www.aol.com/news/more-12-million-worth-jewelry...

    Among the stolen items are a 10.73-carat diamond ring from Graff; two butterfly diamond rings from De Beers; a 3.03-carat diamond ring, an aquamarine ring and a necklace from Hermes.

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