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2. Divisibility rule - Wikipedia

   en.wikipedia.org/wiki/Divisibility_rule

   To test the divisibility of a number by a power of 2 or a power of 5 (2 n or 5 n, in which n is a positive integer), one only need to look at the last n digits of that number. To test divisibility by any number expressed as the product of prime factors p 1 n p 2 m p 3 q {\displaystyle p_{1}^{n}p_{2}^{m}p_{3}^{q}} , we can separately test for ...

3. 1001 (number) - Wikipedia

   en.wikipedia.org/wiki/1001_(number)

   Two properties of 1001 are the basis of a divisibility test for 7, 11 and 13. The method is along the same lines as the divisibility rule for 11 using the property 10 ≡ -1 (mod 11). The two properties of 1001 are 1001 = 7 × 11 × 13 in prime factors 10 3 ≡ -1 (mod 1001) The method simultaneously tests for divisibility by any of the factors ...

4. Division lattice - Wikipedia

   en.wikipedia.org/wiki/Division_lattice

   The non-negative integers partially ordered by divisibility. The division lattice is an infinite complete bounded distributive lattice whose elements are the natural numbers ordered by divisibility. Its least element is 1, which divides all natural numbers, while its greatest element is 0, which is divisible by all natural numbers.

5. File:Lattice of the divisibility of 60 narrow 1,2,3,4.svg

   en.wikipedia.org/wiki/File:Lattice_of_the...

   Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

6. 'It could have been my son': Parents to protest over students ...

   www.aol.com/could-son-parents-protest-over...

   Parents have organized a protest at a Cracker Barrel in Waldorf, Maryland after special education students were denied dine-in service.

7. Tram derails and crashes into shop in Oslo injuring four - AOL

   www.aol.com/news/tram-crashes-store-central-oslo...

   By Gwladys Fouche and Tom Little. OSLO (Reuters) -A tram derailed and crashed into a store in central Oslo on Tuesday, injuring the driver and at least three other people, Norwegian police said.