17 Mar Shortcuts explained: How to find LCM, How to find HCF? How to solve LCM-HCF related problems without mugging up any formulas?. Common Factors. Highest Common Factor (H.C.F). Finding H.C.F. of Big Numbers. Multiples. Common Multiples. Lowest Common Multiple (L.C.M.). Finding. Least Common Multiple of 3 and 5: List the Multiples of each number,. The multiples of 3 are 3, 6, 9, 12, 15, 18, etc. The multiples of 5 are 5, 10, 15, 20, 25, .

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## Lesson 4: The Highest Common Factor (H.C.F) and the Lowest Common Multiple (L.C.M)

For any given numbers, their LCM is always greater than or equal to the biggest number. Ans LCM 4,6 Two traffic lights blink at an interval of 40 and 60 seconds respectively.

Notice that 20 and 40 appear in both lists? But for the sake of conceptual clarity. Two bells ring at an interval of 4 and 6 minutes respectively.

So after how many minutes will they meet for the first time on the starting tutorjal HCF of two numbers 4, 6 First make prime factors of given numbers.

Least Common Multiple of 3 and 5: Any two consecutive numbers are co-prime numbers. LCM is important for time and speed, time and work problems. We will start with the smallest prime number and we will divide into it if we can the divisibility rules come handy.

Hcf and lcm gives us alot of concepts to find hcf and lcm quickly. tugorial

Finding all prime factors of Make a table like this Number Factors 4 6 Now you need to find the prime thtorial of 4 and 6. LCM is also important for circular racetracks, bells, blinking lights, etc. An will do the same with the result or quotientand we will keep dividing by prime numbers until we have 1 as a quotient. Write tutoroal numbers as a multiplication of prime numbers. After how many minutes will they link together?

Multiples of 4 are: First recall, in which tables do they come? Such as multiplying by 1, 2, 3, 4, 5, etc, but not zero. Find common multiples of 3 and 5. In other words, the prime number can be divided only by 1 and by itself. Find all prime factors of both numbers.

### Least common multiple (video) | Khan Academy

Hide Ads About Ads. Suppose in the exam, we need to find LCM of 4 and 6. So 24 is the least common multiple I can’t find a smaller one!

Ans HCF 4,6 There is a 4x 6cm floor. Can you check it?

Multiples of 6 are: For example Numbers HCF 12,15,20 1 so it is smaller than smallest number 12 15,30 So here is the shortcut technique. Lowest Common Multiple L. Similarly if Ajd divide 6 by 2, I get zero remainder.

Multiples of 3 are 3, 6,9, 12,15,18, 21,24, Least Common Multiple The smallest positive number that is a multiple of two or more numbers. We get a multiple of a number when we multiply it by tutroial number.

Number 1 and the number itself are always factors of any number. Multiples of 3 are 3,6,9,12, 15 tutoriaal, 30 ,33, F of two or more numbers is the largest number that divides evenly into both numbers.

## [Aptitude] LCM, HCF, GCD: Basic concept, calculation, applications explained

When you multiply a given whole number by any other whole numberthe result is a multiple of that number. So, the common multiples of 4 and 5 are: Hcf and LCM shortcut method …. So how ane quickly find LCM of two or three numbers?