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In this video, we will see write a Javascript program to Check if a Given Number is an Ugly Number or not.&nbsp;What are Ugly numbers? The ugly numbers are numbers whose only prime factors are 2, 3, or 5. The first 11 ugly numbers are 1,2,3,4,5,6,8,9,10,12,15.For Examples:Input: Number = 14&nbsp; Output: No&nbsp; Explanation: &nbsp;14 is not ugly since it includes another prime factor 7.Input: Number = 6&nbsp; Output: Yes&nbsp; Explanation: 6 is ugly since it includes 2 and 3Algorithm: Step 1: First we iterate for all positive integers till the ugly number count is smaller than n. Step 2:If an integer is ugly then increment the ugly number count. Step 3: To check if a number is ugly, divide the number by the greatest divisible powers of 2, 3, and 5. Step 4: if the number becomes 1 then it is an ugly number otherwise not.<h2 style="text-align:justify;">Approaches to check if a number is Ugly or not</h2>1. Using Loop 2. Using recursion&nbsp;

Javascript program to check if a given number is Ugly Number or not

In this video, we will write a Javascript program to find the Factorial of a Number.&nbsp; Factorial can be defined as - “ Factorial of a non-negative integer is the multiplication of all integers smaller than or equal to n”.&nbsp; For example:&nbsp; Factorial of 3 is 3*2*1 which is 6&nbsp; Factorial of 5 is 5*4*3*2*1 which is 120.&nbsp; Factorial of 8 is 8*7*6* 5*4*3*2*1 which is 40320.&nbsp; Here we see 2 different methods for calculating the factorial of any integer number.&nbsp; 1) Using Integrative loop: In this method, we use a for loop to iterate over the sequence of numbers and get the desired factorial of a number.&nbsp; 2) Using Recursive function:&nbsp; In this method, we are calling the same function more than once to get the factorial of a number. Factorial can be calculated using the following recursive formula.&nbsp; n! = n * (n-1)!&nbsp; n! = 1 if n = 0 or n = 1 JS program to find Factorial of a number :&nbsp; <a href="https://www.geeksforgeeks.org/factorial-of-a-number-using-javascript/">https://www.geeksforgeeks.org/factorial-of-a-number-using-javascript/</a>

Javascript program to find factorial of a number

In this video, we will write a Javascript program to find the largest of the three numbers.Examples: Input: A = 200 B = 800 C = 1000 Output: Largest number = 1000Algorithm to find the largest of three numbers: Step 1: Start Step 2: Read the three numbers to be compared, X, Y, and Z. Step 3: Check if X is greater than Y a. If true, then check if X is greater than Z. (i)If true, print 'X' as the greatest number. (ii) If false, print 'Z' as the greatest number. b. If false, then check if Y is greater than Z. (i) If true, print 'Y' as the greatest number. (ii) If false, print 'Z' as the greatest number. Step 4. EndIn this video we see 2 different approaches for finding the largest number among three numbers: 1. Using an if-else statement: In this method, we use the if-else statement with &amp;&amp; operators to find the largest numbers in given numbers. 2. Using the Math. max() method: A Math. max() is a Javascript inbuilt function and it returns the largest number among the provided numbers.

Javascript program to find largest of three numbers

In this video, we will write a Javascript Program to find the area of triangles. Area of a triangle: The area of a triangle is defined as the total space occupied by the three sides of a triangle in a 2- dimensional plane. Formula: A = 1/2 × b ×h Example: Input h and b : 3 4 Output Area = 6 Now, in this video, we calculate the area of the triangle using two different methodologies 1. Using the height and base of the triangle 2. Using three sides of the triangle Formula: =&gt; (semi-perimeter) s = (a+b+c) / 2; =&gt; area = Math.sqrt(s * ((s - a) * (s - b) * (s - c))); &nbsp;Javascript Program to find the area of triangles. &nbsp;<a href="https://www.geeksforgeeks.org/how-to-find-the-area-of-a-triangle-using-javascript/">https://www.geeksforgeeks.org/how-to-find-the-area-of-a-triangle-using-javascript/</a>

Javascript program to find area of triangle

In this video, we will write a Javascript program to print Hello world.&nbsp; Here in this program to print the ‘Hello World’ sentence to the screen, we use three different methods that javascript provides:&nbsp; 1. console.log(): The console.log() is a function in JavaScript which is used to print any kind of variables defined before in it or to just print any message that needs to be displayed to the user.&nbsp; Syntax: console.log(A);&nbsp; Example: console.log(GeeksforGeeks);&nbsp; 2. alert(): Alert shows an alert box to the user with a message that the user has to press "Ok" to continue using the website.&nbsp; Syntax: alert(“Message”);&nbsp; Example: alert(“GeeksforGeeks”)&nbsp; 3. document.write(): A document.write() is used when we want to print the content to the HTML document. The document.write prints something directly to the website and don't require user interaction.&nbsp; Syntax: document.write(" Message ");&nbsp; Example: document.write(" GeeksforGeeks");&nbsp; &nbsp; JS program to print hello world: <a href="https://www.geeksforgeeks.org/javascript-course-printing-hello-world-in-javascript/">https://www.geeksforgeeks.org/javascript-course-printing-hello-world-in-javascript/</a>

Javascript program to print Hello World

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