Lesson 4: Divisibility in Number Theory

Chapter 1: Preliminaries
Lesson 4 - Divisibility

[jenamaec.quibol]

Thank you po ma'am for your efforts to making this video to fully understand it about divisibility that helps one to check whether a number is divisible by another number without the actual method of division.

[NathanielDolino-wplc]

Thanks for the video! I learned that to check if a number like 510 is divisible by 3, I just need to add its digits (5 + 1 + 0 = 6), and if the sum is divisible by 3, then the whole number is too.

[kaezeldabon]

The principles of divisibility is important for analyzing relationships between numbers, identifying common divisors, and solving math problems

[SHARASARMIENTO-ctkt]

We use procedure to determine if a number is prime and composite. One way to find factors of large numbers quickly is to use tests for divisibility.

[NathanielDolino-wplc]

Euclid Postulate lays a the foundation for understanding parallel lines and intersection.

[RonaldJamesCasil-rdpj]

Divisibility helps to solve a large number to make it easier like 621 if we add 6+2+1 we all that it was 9 so 9 is divisible by therefore 621 is divisible by 3. Thank you for helping us to understand more.

[yvanpasaylo]

To ascertain if a given number is prime or composite, we employ a technique. Using divisibility tests is one fast approach to identify factors of huge integers. Additionally, by using these criteria, we may also ascertain the factors of a huge number, which is helpful in identifying if the number is prime or composite.

[angelrosegongora]

Divisibility helps a lot specially if we want to solve large numbers in the quickest way possible. As shown in the video 621 is divisible by 3 because if we add 6+2+1, it will equate to 9. Thus, 9 is divisible by 3 so as 621.

[riamaesabatin]

Divisibility rules help us determine whether a number is divisible by another. This rules also helps us find out the factors of a large numbers that is useful in determining whether the numbers is prime or composite.

[nelsonmellejor]

Divisibility is helpful not only in school but also in a real life situation .

[arielbastasa]

Divisibility help us work out whether a number is exactly divisible by other numbers .

[renemaegocong]

divisibility test is a rule for determining whether one whole number is divisible by another.

[linjanezerrudo]

Divisibility is the property of an integer number to be divided by another, resulting an integer number.

[leochatto]

Divisibility help us make easy to solve a large number.

[AlmeraSumicad]

Now I know that in number theory, divisibility refers to the property of one integer being divisible by another integer without leaving a remainder.