Base-dependent integer sequences

Reverse divisible number

In number theory, reversing the digits of a number n sometimes produces another number m that is divisible by n.This happens trivially when n is a palindromic number; the nontrivial reverse divisors are 1089, 2178, 10989, 21978, 109989, 219978, 1099989, 2199978, ... (sequence in the OEIS). For instance, 1089 × 9 = 9801, the reversal of 1089, and 2178 × 4 = 8712, the reversal of 2178.The multiples produced by reversing these numbers, such as 9801 or 8712, are sometimes called palintiples. (Wikipedia).

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Divisibility Rules

This video covers the divisibility rules for 2,3,4,5,6,8,9,and 10. http://mathispower4u.yolasite.com/

From playlist Factors, Prime Factors, and Least Common Factors

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Ex 2: Apply Divisibility Rules to a 4 Digit Number

This video explains how to apply the divisibility rules for 2, 3, 4, 5, 6, 8, 9, and 10. http://mathispower4u.com

From playlist Factors, Prime Factors, and Least Common Factors

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Ex 1: Apply Divisibility Rules to a 4 Digit Number

This video explains how to apply the divisibility rules for 2, 3, 4, 5, 6, 8, 9, and 10. http://mathispower4u.com

From playlist Factors, Prime Factors, and Least Common Factors

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Divisibility Rule for 3

#shorts This video reviews the divisibility rule for 3.

From playlist Math Shorts

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Number Theory | Divisibility Basics

We present some basics of divisibility from elementary number theory.

From playlist Divisibility and the Euclidean Algorithm

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A Maths Puzzle: Find the nine digit number

Find a nine digit numbers, using the numbers 1 to 9, and using each number once without repeats, such that; the first digit is a number divisible by 1. The first two digits is a number divisible by 2; The first three digits is a number divisible by 3 and so on until we get a nine digit num

From playlist My Maths Videos

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Finite State Machines

Theory of Computation 1. Finite State Machines ADUni

From playlist [Shai Simonson]Theory of Computation

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Proving a Negative Times a Negative Is a Positive with the Distributive Property

When you're multiplying integers and especially when you begin multiplying negative numbers, one of the first questions that comes up for students is why does a negative times a negative equal a positive? There are lots of ways to show it, and a couple of my favorites are: + Multiplicatio

From playlist Math Mini

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Python Programming Practice: LeetCode #9 -- Palindrome Number

In this episode of Python Programming Practice, we tackle LeetCode #9 -- Palindrome Number. Link to the problem here: https://leetcode.com/problems/palindrome-number/ If you don't know Python, you can learn the basics of Python for data analysis using this guide I created on Kaggle (Data

From playlist Python Programming Practice

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Building cells by Maithreyi Narasimha

Program ICTP - ICTS Winter School on Quantitative Systems Biology ORGANIZERS: Buzz Baum, Guillaume Salbreux, Stefano Di Talia and Vijaykumar Krishnamurthy DATE: 03 December 2019 to 20 December 2019 VENUE: Ramanujan Lecture Hall, ICTS Bangalore The development of an organism from a sin

From playlist Winter School on Quantitative Systems Biology: Quantitative Approaches in Ecosystem Ecology 2020

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Divisibility Tricks - Numberphile

Featuring Tony Padilla... Check out Brilliant (and get 20% off their premium service): https://brilliant.org/numberphile (sponsor) More links & stuff in full description below ↓↓↓ Extra footage and trick from this interview: https://youtu.be/ZWeUNUCf2rI Card trick and shuffling videos on

From playlist Cards and Shuffling on Numberphile

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Basic slide rule theory and use (Part 5): Chaining and S/T/L scales

The fifth (and final) of a series of videos explaining the basic slide rule. This video explains how to chain operations and how to use scales S, T, and L. Basic slide rule playlist: https://www.youtube.com/playlist?list=PL_qcL_RF-ZyvJYtIr9NRXJX958d6BgdbN All my slide rule videos: https

From playlist Basic slide rule theory and use

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Basic slide rule theory and use (Part 2): CI scale

The second of a series of videos explaining the basic slide rule. This video explains the CI scale and its basic uses. Basic slide rule playlist: https://www.youtube.com/playlist?list=PL_qcL_RF-ZyvJYtIr9NRXJX958d6BgdbN All my slide rule videos: https://www.youtube.com/playlist?list=PL_q

From playlist Basic slide rule theory and use

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Fractions of an Amount (And Reverse Fractions!) | Grade 5 Crossover Playlist | GCSE Maths Tutor

Join this channel to get access to perks: https://www.youtube.com/channel/UCStPzCGyt5tlwdpDXffobxA/join A video revising the techniques and strategies for completing fraction of an amount calculations (Higher and Foundation). This video is part of the Fractions, Decimals and Percentages

From playlist GCSE Maths Videos

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Math for Liberal Studies - Lecture 3.8.1 Affine and Multiplicative Ciphers

This is the first video lecture for Math for Liberal Studies, Section 3.8: More Modular Arithmetic and Public-Key Cryptography. In this lecture, I talk about how we can use multiplication in modular arithmetic to construct new ciphers. I also discuss the difficulty in finding the decryptio

From playlist Math for Liberal Studies Lectures

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05 Scientific Notation Conversions Worked Example

in this video, we answer a student question relating to negative exponents in scientific notation

From playlist Middle School - Worked Examples

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Lecture 10 - Arithmetic and Algebra - Problem Discussion

This is Lecture 10 of the COMP300E (Programming Challenges) course taught by Professor Steven Skiena [http://www.cs.sunysb.edu/~skiena/] at Hong Kong University of Science and Technology in 2009. The lecture slides are available at: http://www.algorithm.cs.sunysb.edu/programmingchallenges

From playlist COMP300E - Programming Challenges - 2009 HKUST

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Ex: Dividing Signed Decimals (Negative Divided by Positive)

This video explains how to divide signed decimals. http://mathispower4u.com

From playlist Multiplying and Dividing with Decimals

Related pages

Fibonacci number | G. H. Hardy | Palindromic number | W. W. Rouse Ball | Number theory