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Date: 30-7-2020
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Date: 28-10-2019
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Date: 1-1-2021
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A number is said to be divisible by
if
is a divisor of
.
The function Divisible[n, d] returns True if an integer is divisible by an integer
.
The product of any consecutive integers is divisible by
. The sum of any
consecutive integers is divisible by
if
is odd, and by
if
is even.
REFERENCES:
Guy, R. K. "Divisibility." Ch. B in Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, pp. 44-104, 1994.
Jones, G. A. and Jones, J. M. "Divisibility." Ch. 1 in Elementary Number Theory. Berlin: Springer-Verlag, pp. 1-17, 1998.
Nagell, T. "Divisibility." Ch. 1 in Introduction to Number Theory. New York: Wiley, pp. 11-46, 1951.
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دراسة تكشف "مفاجأة" غير سارة تتعلق ببدائل السكر
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أدوات لا تتركها أبدًا في سيارتك خلال الصيف!
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العتبة العباسية المقدسة تؤكد الحاجة لفنّ الخطابة في مواجهة تأثيرات الخطابات الإعلامية المعاصرة
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