LCM - Least Common Multiple

The Least Common Multiple (LCM) of two numbers is the smallest positive number that is evenly divisible by both of them. For example, the LCM of 4 and 6 is 12, as 12 is the smallest number that is divisible by both 4 and 6.

Examples of LCM ( Least Common Multiple)

• The LCM is always greater than or equal to the larger of the two numbers. The LCM is equal to the larger of the two numbers when one of the numbers is divisible by the other. For example, the LCM of 4 and 8 is 8, because 8 is divisible by 4.
• The LCM of two different numbers is multiplication of them if there are no common factors other than 1. For example, LCM of 3 and 7 is 21.
• The LCM of two same numbers is the number itself. For example, LCM of 5 and 5 is 5.

LCM of 4 and 6 :
Multiples of 4 are 4, 8, 12, 16, 20......
Multiples of 6 are 6, 12, 18, 24, 30.......
The lowest common multiple of 4 and 6 is 12.

LCM of 12 and 18:
Multiples of 12 are 12, 24, 36, 48, 60 ......
Multiples of 18 are 18, 36, 54, 72 .......
The lowest common multiple of 12 and 18 is 36.

LCM of 20 and 15:
Multiples of 15 are 15, 30, 45, 60 ......
Multiples of 20 are 20, 40, 60, 80 .......
The lowest common multiple of 20 and 15 is 60.

LCM for Beginners

This section explains what LCM is, how to find it using different methods, and where it's used in real life.

• Methods to Find LCM
• LCM Formulas
• LCM of Decimal Numbers
• LCM of Fractions
• LCM of Polynomials
• Properties of LCM
• Relation between HCF and LCM,
• Real-Life Applications of LCM
• LCM Calculator

LCM for Aptitude Preparation

Boost your exam prep with LCM tricks, quizzes, and commonly asked aptitude questions and facts.

• Tips and Tricks for LCM
• Interesting Facts about LCM
• LCM Quiz

LCM Practice Questions

Practice solving LCM problems at both basic and advanced levels to strengthen your understanding.

• LCM - Practice Questions (Basic)
• LCM - Practice Questions (Advanced)
• HCF and LCM – Aptitude Questions

LCM for Programmers

Explore LCM-based coding problems and programs, from simple logic to competitive programming challenges.

• LCM of 2 Numbers Program
• LCM of an Array
• LCM of the First n Natural Numbers
• LCM of factorial and its neighbors
• Maximum sum of distinct numbers with LCM as N
• GCD & LCM Coding Problems