Explain the HCF and LCM of numbers.

A factor is a number that divides into another number exactly and without leaving a remainder. 

Factors of 12 = 1, 2, 3, 4, 6, 12

A prime number has only two factors - the number itself and 1.

Prime factors of 12

12 = 2 x 2 x 3

HCF or highest common factor of two or more numbers is the greatest common factor present in those two or more numbers

Example: HCF of 15 and 25 is 5

LCM or lowest common multiple of two or more numbers is the least number that is divisible by those two or more numbers


LCM of 6, 15, 24 is 120


Simply Easy Learning

Updated on: 10-Oct-2022


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