**HCF : **The largest number that divides two or more numbers is the highest common factor (HCF) for those numbers. For example, consider the numbers 30 (2 x 3 x 5), 36 (2 x 2 x 3 x 3), 42 (2 x 3 x 7), 45 (3 x 3 x 5). 3 is the largest number that divides each of these numbers, and hence, is the HCF for these numbers.

HCF is also known as Greatest Common Divisor (GCD).

**LCM : **The least number which is exactly divisible by each of the given numbers is called the least common multiple of those numbers. For example, consider the numbers 3, 31 and 62 (2 x 31). The LCM of these numbers would be 2 x 3 x 31 = 186.

**SSC Multi Tasking (Non-Technical) Staff 2021 MCQ – Numerical Aptitude (HCF LCM) Set A**

**SSC Multi Tasking (Non-Technical) Staff 2021 MCQ – Numerical Aptitude (HCF LCM) Set B**

**SSC Multi Tasking (Non-Technical) Staff 2021 MCQ – Numerical Aptitude (HCF LCM) Set C**